Question

(x+1) elevado a 2 +(x+2) elevado a 2 -(2x+1) elevado a 2

Answer 1

A resposta desse problema  é = 4.

Answer 2

$(x+1)^2+(x+2)^2-(2x+1)^2\\(x+1)^2+(x+2)^2=(2x+1)^2\\(x^2+2x+1)+(x^2+2x+4)=4x^2+4x+1\\2x^2+4x+5=4x^2+4x+1\\2x^2-4=0\\2x^2=4\\x^2=2\\\boxed{x'=\sqrt{2}}\\\boxed{x''=-\sqrt{2}}$