Question

resolva a equação incompleta x²-10=0

Answer 1

$x^2 - 10 = 0 \\\\ x^2 = 10 \\\\ x = + -\sqrt{10}\\\\ x'=\sqrt{10}\\\\ x''=-\sqrt{10}$

Answer 2

x"-10=0
x+x-10=0
2x-10=0
2x=10+0
2x=10
x=10/2=5