Question

please help!!!! :( view questions in attachment in reply vvv

Answer 1

problems:

Answer 2

for the first one
\[(4x+7)^2 \]expand it
\[(4x-7)(4x-7) \]foil
\[16x^2-28x-28x+49 \]combine like terms
\[16x^2-56x+49 \]

Answer 3

sry it should be
\[16x^2 +56x+49\] i accidentally changed the sign

Answer 4

@helpme1.2 im really not sure about the answers, i have not done this in quite some time.

Answer 5

for the second one
you have
\[(2x^3+9x-8)-(4x^2-15x+7) \] combine like terms
\[2x^3-4x^2+24x-15 \]

Answer 6

what answer are you not sure with
the ones i gave u?

Answer 7

@helpme1.2 the first one

Answer 8

@helpme1.2 im assuming A or D but im not sure at all

Answer 9

that is how you do it, and i know it is correct

Answer 10

it is neither A nor D

Answer 11

http://www.purplemath.com/modules/polymult.htm

Answer 12

@helpme1.2 16x2 + 56x + 49 , that is not correct?

Answer 13

that is the answer

Answer 14

@helpme1.2 thank you for the link, going to review now.

Answer 15

No problem