Asked by NoU

Which expression is NOT equivalent to the other three?
A) −9 − 7n + 16n
B) 9(n − 9)
C) n − 9 + 8n
D) 9n − 9
I am unsure hot to do this can someone please lead me into the righ direction and help me solve it

Answers

Answered by NoU
Can someone also help me on these
2. The length of a rectangle is represented by (6x − 2), and the width is represented by (x − 1). Which expression best represents the area of the rectangle?
A) 6x2 + 8x + 2
B) − 8x + 2
C) 6x2 − 8x + 2
D) 6x2 − 8x − 2***

3.What is the complete factorization of x4 - y4 ?
A) (x2 + y)(x - y) (x - y)
B) (x2 + y2)(x + y) (x - y)
C) (x2 + y2)(x - y) (x - y)***
D) (x2 + y2)(x + y) (x + y)
For the first question simplify each and see which ones are equal.
We can do a) together... collect like terms so the -7n and the 16n go together
= 9n - 9
and take a look at d)
that is the same answer as a)
Now you try b) and c) and see what you get : )
#3 is correct : )
2) is incorrect because a negative times a negative number is a positive number...
check your work...
Answered by NoU
I was confused on #2 can u help me on that one
Answered by Anonymous
(6x -2)(x - 1)
= (6x)(x) -1(6x) -2(x) -1(-2
= ....
Answered by Reiny
#3 is INCORRECT
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