Question

(2x+3) la a 2 + 7 = 4(x-2) la a doua

Answer 1

$\it (2x+3)^2+7=4(x-2)^2\Rightarrow 4x^2+12x+9+7=4(x^2-4x+4) \Rightarrow\\ \\ \Rightarrow 4x^2+12x+16=4(x^2-4x+4)|_{:4}\Rightarrow x^2+3x+4=x^2-4x+4 \Rightarrow\\ \\ \Rightarrow x^2 +3x-x^2+4x=4-4 \Rightarrow 7x=0 \Rightarrow x=0$