Question

( - 2a2 + 6b +9) - ( 4a2 -2b- 7 )

Answer 1

Answer:

$\Huge \boxed{8b+16-12a}$

Step-by-step explanation:

Distributive property: a(b+c)=ab+ac

First, remove parenthesis.

$\displaystyle -2a*2+6b+9-(4a*2-2b-7)$

Then, multiply.

$\displaystyle 2*2=4$

$\displaystyle -4a+6b+9-(4*2a-2b-7)$

Multiply.

$\displaystyle 4*2=8$

$\displaystyle -4a+6b+9-(8a-2b-7)$

$\displaystyle -8a-2b-7=-8a+2b+7$

$\displaystyle -4a+6b+9-8a+2b+7$

Solve to find the answer.

$\displaystyle -4a+6b+9-8a+2b+7=8b+16-12a$

$\Large \boxed{8b+16-12a}$, which is our answer.

Answer 2

Answer:

Hey mate plzz refer to the attachment