Question

Como resolver:
A) x²=25
B) x+2=1

Answer 1

a)
x² = 25
√x² = √25
x' = 5
x" = -5

S = {-5,5}

b)
x + 2 = 1
x = 1 - 2
x = - 1

Answer 2

A-25:5=5 entao x=5
B- x=1-2 =-1
X= -1