Question

Written as a simplified polynomial in standard form, what is the result when

(x - 2)^2is subtracted from 9x^2-8x?

Answer 1

9x^2 - 10x -4

Explanation:

It is set up like this

9x^2 - 8x

- (x-2)2

First solve (x-2)2

the answer is (2x-4)

so now you can do this instead

9x^2 - 8x

- 2x - 4

----------------------------------

9x^2 - 10x +4

9x^2 minus zero is 9x^2

-8x-2x is -10x

0- -4 is 4 because that is like saying 0 + 4 because double negatives equal a positive

A simpler way is to change all the numbers to the opposite sign and then change the minus to a plus

like this

9x^2 - 8x

+ -2x + 4

----------------------------------

9x^2 - 10x +4

Answer 2

8x^2-4x-4

Explanation:

On delta math