Please perform the indicated operations and simplify

Question

(3x-5)^2-(2x+1)(x-4)

Answer 1

(3x-5)^2-(2x+1)(x-4)
use FOIL to expand each one

= 9x^2 - 30x + 25 - (2x^2 - 8x + x - 4)

now simplify

Answer 2

Yes but doesn't -8x and x combine to become -7x? so then it should look like this?

-2x^2 -7x -4?

Answer 3

of course ...
that is what I meant by simplify.

I was expecting you to finish the question.

can you tell me what the next few lines would be ?

Answer 4

9x2-30x+25
-2x2 -7x -4
--------------
7x2 -23+29
Is this correct?

Answer 5

Thanks Breanna! Looks correct to me!

Answer 6

Perform the indicated operations and simplify (2x - 6) (x + 1) - (x - 7)^2