Question

what is the answer too (4x-5)(4x+4)

Answer 1

16x^2-4x-20

Answer 2

You FOIL it out.
F= First, you multiply the first terms together= (4x)(4x)=16x^2
O= Outer, you multiply the outer terms of both together (4x)(4)=16x
I= Inner, you multiply the inner terms of both together (-5)(4x)=-20x
L=Last, you multiply the last terms of both together= (-5)(4)=-20

Then you combine all terms together: 16x^2+16x-20x-20
Your final answer should be 16x^2-4x-20

Answer 3

=16x^2+16x-20x-20
=16x^2-4x-20