Question

Resolva a equação $y + 5 =\frac{(4y + 4 + y^{2} - 2)}{2}$:

Answer 1

$y+5=\frac{4y+4+y^2-2}{2}\\\\Vamos\; multiplicar\; a \;equacao \;por\; 2 \;para \;eliminar\; as\; fracoes:\\\\2y+10=4y+4+y^2-2\\\\y^2+4y-2y+4-2-10=0\\\\y^2+2y-8=0\\\\Por\;Bhaskara:\\\Delta=2^2-4.1.(-8)\\\Delta =4 + 32\\\Delta=36\\\\y'=\frac{-2+\sqrt{36}}{2.1}=\frac{-2+6}{2}=2\\\\y''=\frac{-2-\sqrt{36}}{2.1}=\frac{-2-6}{2}=-4$

S = {2 , -4}