Question

Resolva a equação do 1° grau incompletas
A)X²-5=0
B) X²-7=0
C) 9x²-9x=0

Answer 1

Resposta:

A) x²-5=±√5 sol(-5;5)

B)x²-7=±√7sol(-7;7)

C) x(9x-9)

x1=1

x2=0

Answer 2

A)X²-5=0

x²= 5

x= ± √5

S= ( √5 , - √5)

B) X²-7=0

x²= 7

x= ± √7

S= (√7 , - √7)

C) 9x²-9x=0

9x • (x - 1) = 0

x= 0

9x - 9 = 0

9x = 9

x= 9/9

x= 1

S= ( 0 , 1)