Question

Calcule o valor de x :    4x*x=16

Answer 1

4$x^{2}$ =16 <=> x = $\sqrt{ \frac{16}{4} } <= > x = 2$

Answer 2

$4x.x=16$

$4 x^{2} =16$

$x^{2} = \frac{16}{4}$

$x^{2} =4$

$x= \sqrt{4}$

$\boxed{x=2}$

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