Question

Simplify using the horizontal method (2^2+4n+4)(4n-5 )

Answer 1

(2^2+4n+4)(4n-5 )
= (4+4n+4)(4n-5 )
= (4n + 8)(4n - 5)
= 16n^2 + 32n - 20n - 40
= 16n^2 + 12n - 40

Answer 2

=(10x2)+(14x)+(5x)+(7)==(10x2)+(14x)+(5x)+(7)=

=10x2+19x+7=10x2+19x+7.

Answer: (2x+1)(5x+7)=10x2+19x+7