Question

cuanto es
2 ײ +4 × 2 =0
​

Answer 1

Resolución

$2x^{2} +4 \times 2=0\\2x^{2} +8=0\\2x^{2}=-8\\x^{2}=-8/2\\x^{2} =-4\\x=\sqrt{-4}\\ x=\sqrt{-1(4)}\\ x=2i$

R = x → 2i ;  x → -2i