Question

A forma geral da equação : x(x-1)/2 = x² -8/4

Answer 1

Oie, Td Bom?!

$\frac{x \: . \: (x - 1)}{2} = x {}^{2} - \frac{8}{4}$

$\frac{x {}^{2} - x }{2} = x {}^{2} - 2$

$x {}^{2} - x = 2x {}^{2} - 4$

$x {}^{2} - x - 2x {}^{2} + 4 = 0$

$- x {}^{2} - x + 4 = 0 \: . \: ( - 1)$

$\boxed{x {}^{2} + x - 4 = 0}$

Att. Makaveli1996