Question

raizes da equacao 5ײ-20=0

Answer 1

5x² -20 = 0
5x² = 20
x² = 20/5
x² = 4
x = +/- 2

Answer 2

$5x^{2} -20=0 x^{2} -4=0 x^{2} =4 x= \sqrt{4} x=2$

S{+2;-2}