Question

Alguém sabe resolver pra mim?

2x²-50=0

Answer 1

$2 x^{2} -50=0 \\ \\ 2 x^{2} =50 \\ \\ x^{2} =50\div2 \\ \\ x^{2} =25 \\ \\ x=\pm \sqrt{25} \\ \\ x=\pm5 \\ \\ S=\{-5,+5\}$