Question

Resolva as equações.

a) x²-25=0

b) 2x²-98=0

c) 24=6x²

Answer 1

a) x² - 25 = 0
x² = 25
x = 5

b) 2x² - 98 = 0
2x² = 98
x² = 49
x = 7

c) 24 = 6x²
4 = x²
2 = x
x = 2

Answer 2

a) x²-25= 0
x²= 25
x= √25
x= +-5

b) 2x²-98= 0
2x²= 98
x²= 98/2
x²= 49
x= √49
x= +-7

c) 24= 6x²
x²= 24/6
x²= 4
x= √4
x= +-2