Question

Resolva as seguintes equações do segundo grau
A)2 ×2=2
B)42=14×2
C)4×2-100=0
D)3×2-90=0
E)8×2=64
F)2 ×2-72=0

Answer 1

A) 2x2=2
4 =2
=+6

B) 42=14x2
42 = 28
=70

C) 4x2-100=0
6-100=0
=-94

D) 3x2-90=0
6-90=0
=-84

e) 8x2=64
16=64
64-16
=48

F) 2x2-72=0
4-72=0
=68