Question

equação do 2 grau 2x2-72=0

Answer 1

a= 2x2 b= 0 c= -72
/\= 0 - 4*2*(-72)
/\= 576
-b+-\/576/2*a
x'= -0+24/4= 6
x"= -0-24/4= -6

Answer 2

2x^2-72=0
2x^2 = 72
x^2 = 72/2
x^2 = 36
x = √36
x = +/- 6

R.: (6 , - 6)