Question

resolva as equações do segundo grau: a) (X-3)²=16 b) (2X-3)²=25

Answer 1

(X-3)²=16

(x-3)= ±4

x-3= +4 => x'=7 ✓

x-3= -4 => x"=-1 ✓

(2X-3)²=25

(2x-3)= ±5

2x-3 = +5 => 2x=8 ==> x'=4 ✓

2x-3 = -5 => 2x=-2==> x"=-1 ✓