Algebra #3

Algebra Level 1

$2x^2 - 32 = 0$

Which of the choices satisfies the above equation?

-6 5 7 32 -4

4 solutions

Munem Shahriar
Jun 30, 2017

$2x^2 - 32 = 0$

$\Rightarrow 2x^2 = 32$

$\Rightarrow x^2 = 16$

$x = \pm \sqrt{16}$

Therefore $x = 4$ or $-4$

Prateek Gulati
Oct 8, 2015

X^2 = 16 Therefore X = 4 or -4

Máïńŏo Ħŕĩżi
Sep 20, 2015

2x² - 32 = 0 => 2x² = 32 => 2x²/2 = 32/2 => x² = 16 => x = 4 Or x = -4 We don't have x = 4 So => x = -4

Azadali Jivani
Sep 18, 2015

2x² = 32
X² = 16
X = 4 or -4