Question

ajutorrr urgent vă roggg​

Answer 1

$E(x)=(x+1)²-2(x+6)-5\\E(x)=x²+2x+1-2x-12-5\\E(x)=x²+1-12-5\\E(x)=x-16\\\implies \boxed{E(x)=(x+4)(x-4)}$

Answer 2

Explicație pas cu pas:

$E(x) = {(x + 1)}^{2} - 2(x + 6) - 5 = {x}^{2} + 2x + 1 - 2x - 12 - 5 = {x}^{2} - 16 = {x}^{2} - {4}^{2} = (x + 4)(x - 4)$

q.e.d.