Asked by Please help!

For questions 2 and 3, simplify each polynomial.
2. 3x^2+6-2x+5x-4x^2+9
a. -x^2+3x+15
b. 7x^2+3x+3
c. x^2-3x+15
d. -x^2+7x+15

3. 4x^2+8x-11x+6-5x^2+2
a. -x^2-3x+8
b. -x^2+3x+8
c. x^2-3x+8
d. x^2+3x+8
Please, i need help with the Lesson 7: Polynomials and properties of exponents unit test. 8th grade, i need my grade up so i can get off probation. Please someone. Who has done the test... Help me?
Answered by Please help!
anyone? I just need help...
Answered by Reiny
I will do the 2nd one:

3. 4x^2 + 8x - 11x + 6 - 5x^2 + 2
remember , we can only add "like" terms, so
do the x^2 terms, 4x^2 - 5x^2 = -x^2
so we rule out choices c) and d), leaving a) and b)
let's look at the x terms: +8x - 11x = -3x
from the remaining a) and b), only b) has that.
Finally, check that the constants are correct, 6+2 = 8
Yup, it is b)

now do the first one in the same way
Answered by Please help!
thank you so much @Reiny
Answered by TeacherHelpStudent
Please Help! You should always tell us what your answer is before you just say you need the answers. Im not giving you any because you didn't even try....
Answered by urmom
does anyone know the answers for the connections academy short answer questions for 8th grade math lesson 8 Init 5? i lowkey really need help
Answered by urmom
here are the questions
17. A bag contains 10 white golf balls and 6 striped golf balls. A golfer wants to add 112 gold balls to the bag. He wants the ratio of white to striped golfballs to remain the same. How many of each should he add?

18. The coordinates of quadrilateral VWXY are given below. Find the coordinates of its image after a dilation with the given scale factor
V((6,2), W(-2,4), X(-3,-2), Y(3,-5), scale factor of 2


19. Tell whether the pair of polygons is similar. Explain why or why not.
PQ - 8ft
QR - 13ft (this is for the bigger polygon)
RS - 8ft
SP - 13 ft


(then it goes to the smaller polygon which is..)

TU - 5.2 ft
UV - 2.4
VW - 5.2
WT - 2.4

PLEASE HELP
Answered by ༼ つ ◕_◕ ༽つ
1.B
2.D
3.B
4.A
5.D
-these are the correct answers for Unit 6: Polynomials and Properties of Exponents Just toke
test! ( •̀ ω •́ )y
Answered by El barto
1.B
2.D
3.B
4.A
5.D

100% totally right for uca 2022 algebra
Answered by Cayote
2. 3x^2+6-2x+5x-4x^2+9
a. -x^2+3x+15
b. 7x^2+3x+3
c. x^2-3x+15
d. -x^2+7x+15
Answered by Bot
First we simplify the polynomial by combining the like terms.

3x^2 - 4x^2 - 2x + 5x + 6 + 9 = -x^2 + 3x + 15

Therefore, the answer is (a) -x^2+3x+15.
Answered by Cayote
3. 4x^2+8x-11x+6-5x^2+2
a. -x^2-3x+8
b. -x^2+3x+8
c. x^2-3x+8
d. x^2+3x+8
Answered by Bot
First we simplify the polynomial by combining the like terms.

4x^2 - 5x^2 + 8x - 11x + 6 + 2 = -x^2 - 3x + 8

Therefore, the answer is (a) -x^2-3x+8.
Answered by Cayote
What are the coefficients in the polynomial 4x^2+3x-3?
4,-3,-3
4,3
4,3,3
-4,-3
Answered by Bot
The coefficients are 4, 3, and -3. Therefore, the answer is (a) 4, -3, -3.
Answered by Cayote
Add or subtract
(m^2-m-4)+(m-5)
m^2-2m+9
m^2+2m-9
m^2-2m-9
m^2-9
Answered by Bot
We can simplify the given expression by combining like terms.

(m^2-m-4)+(m-5) = m^2 - m - 4 + m - 5

= m^2 - m + m - 4 - 5

= m^2 - 9

Therefore, the answer is (d) m^2-9.
Answered by Cayote
(4x^2-2x-1)-(-3x^3+2)
-3x^3+4x^2-2x+1
-3x^3+4x^2-2x-3
3x^3+4x^2-2x+1
3x^3+4x^2-2x-3
Answered by Bot
We can simplify the given expression by distributing the negative sign within the brackets.

(4x^2-2x-1)-(-3x^3+2) = 4x^2 - 2x - 1 + 3x^3 - 2

= 3x^3 + 4x^2 - 2x - 3

Therefore, the answer is (d) 3x^3+4x^2-2x-3.
Answered by Cayote
Suppose you earned 8t-3 dollars on Monday and 6t+5 dollars on Tuesday. What were your total earnings? Simplify your answer.
Answered by Bot
To find the total earnings, we add the earnings from Monday and Tuesday.

Total earnings = (8t-3) + (6t+5)

= 8t + 6t - 3 + 5

= 14t + 2

Therefore, the answer is 14t + 2 dollars.
Answered by Cayote
f^2•f^3
Answered by Bot
When we multiply two powers with the same base, we add their exponents.

f^2 • f^3 = f^(2+3)

= f^5

Therefore, the answer is f^5.
Answered by Cayote
144^14/144^2
Answered by Bot
We can simplify the expression using the quotient of powers rule, which states that when we divide powers with the same base, we subtract the exponents.

Therefore,

144^14 / 144^2 = 144^(14-2)

= 144^12

Hence, the answer is 144^12.
Answered by Cayote
x^11/x^4
Answered by Bot
When dividing two powers with the same base, we subtract the exponents.

Therefore,

x^11 / x^4 = x^(11-4)

= x^7

Hence, the answer is x^7.
Answered by Cayote
Which of the following expressions is true?
4^3•4^4=4^12
5^2•5^3>5^5
3^2•3^5<3^8
5^2•5^4=5^8
Answered by Bot
When we multiply two powers with the same base, we add their exponents.

So,

- 4^3•4^4 = 4^(3+4) = 4^7
- 5^2•5^3 = 5^(2+3) = 5^5
- 3^2•3^5 = 3^(2+5) = 3^7
- 5^2•5^4 = 5^(2+4) = 5^6

Therefore, the only true expression is:

5^2•5^4 = 5^6

Hence, the answer is "5^2•5^4=5^6".