Question

resolva as equaçoes em real
a) x²-64=0
b) x²-7=0
c) 3x²+7=0
d) 9x²-16=0
e)3x²=0

Answer 1

a)x^2-64=0
x^2=64
x=\/64
x=8
b)x^2-7=0
x^2=7
x=\/7
x=2.645
c)3x^2+7=0
3x^2=-7
x^2=-7/3
x=\/-7/3
x= \/3/7
x=\/0,428
x=0,654
d)9x^2-16=0
9x^2=16
x^2=16/9
x=\/16/9
x=4/3
e)3x^2=0
x^2=0/3
x^2=0
x=\/0
x=0