Simplify - 7x (4+7x) - 8 (2-4x)

Question

Sophie Davila

Mathematics

30 June, 09:46

Simplify - 7x (4+7x) - 8 (2-4x)

+1

Answers (2)

Know the Answer?

Tyshawn Ferrell · Answer 1

Tyshawn Ferrell 30 June, 10:03

0

-28x-49x-16+32x

-77x-16+32x

-45x-16

Raegan Cortez · Answer 2

8x-49^2-16

because - 7x (4+7x) is broken down to

-7x*4 = - 28x

and

-7x*7x = - 49x^2 the square root is because x*x = x^2

then you do the second part which is

-8 (2-4x) and again you break it down

-8*2=-16

-8*-4x=36x

so now you have

-28x-49x^2-16+36x

and when you simplify you get

8x-49^2-16