Question

Urgente !!!! Resolva as equações

a)1/2x²=0
b)-4x²+1=0
c)-x²+5=0

Answer 1

A) 

$\frac{1}{2}.x^{2} = 0$ → Passando o $\frac{1}{2}$ para o outro lado:

$x^{2} = 0 . \frac{1}{2}$

$x^{2} = 0$

Logo, x = 0.

B)

$-4x^{2} + 1 = 0$

$-4x^{2} = -1$

$x^{2} = \frac{-1}{-4}$

$x = \frac{\sqrt{1}}{\sqrt{4}}$

Logo, x = $\frac{1}{2}$

C)

$-x^{2} + 5 = 0$

$-x^{2} = - 5$

$x^{2} = 5$

$x = \sqrt{5}$

Logo, x = $\sqrt{5}$