Question

Resolva as equações.

$- 64 + 4 {x}^{2} = 0$
$0.15 {x}^{2} = 0.6$

Answer 1

-64+ 4x² = 0

4x² = 64


${x}^{2} = \frac{64}{4}$

x² = 16

x = √16

x= ±4

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0,15x² = 0,6



${x}^{2} = \frac{0.6}{0.15}$

x² = 2


x = √2


x= ±√2