Question

Resolver por formula general
(aqui es x a la dos) x2-4X=12
doy corona

Answer 1

Explicación paso a paso:

$x^{2} - 4x = 12$

$x^2-4x-12=0$

$Formula =\frac{-\left(-4\right)\pm \sqrt{\left(-4\right)^2-4\cdot \:1\cdot \left(-12\right)}}{2\cdot \:1} =$

$Formula=\frac{-\left(-4\right)\pm \:8}{2\cdot \:1}$ =

$x_1=\frac{-\left(-4\right)+8}{2\cdot \:1}$ = 6

$\:x_2=\frac{-\left(-4\right)-8}{2\cdot \:1}$ = -2