what are the coefficients in the polynomial 5x^2+2x-4?

Question

A: 5,2
B: -5,-2
C: 5,2,-4
D: 5,-2,-4

Answer 1

A: 5,2

Answer 2

could you show the math to figure this out please? I don't just want the answer, I want to learn.

Answer 3

Sure! In a polynomial in standard form, the coefficients are the numerical values that are multiplied by the variables raised to different powers.

In the polynomial 5x^2 + 2x - 4, we have:

- The coefficient of x^2 is 5.
- The coefficient of x is 2.
- The coefficient of the constant term (which doesn't have a variable) is -4.

Therefore, the coefficients are 5 and 2. So the answer is A: 5,2.

Answer 4

thank you very much, you're an absolute lifesaver.

Answer 5

You're welcome! I'm glad I could help. If you have any other questions, feel free to ask!

Answer 6

Actually, I do have another question for you. Add or subtract.

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

A: m^2-2m+9
B: m^2+2m-9
C: m^2-2m-9
D: m^2-9

Answer 7

To add or subtract these two expressions, we need to combine like terms.

The first expression, m^2 - m - 4, has no like terms with the second expression, m - 5. Therefore, we just need to write both expressions together:

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

From here, we can simplify by combining like terms. First, we can group the terms with m together:

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

The terms with m cancel out because they are opposites. So we are left with:

m^2 - 9

Therefore, the answer is D: m^2 - 9.