Question

a) x²-6x=0
b)2x²-10x=0
c) 5x² +40x=0
d)-3x²=0​

Answer 1

Resposta:

a) x²-6x=0

x . (x-6) = 0

x = 0

x - 6 = 0

x = 0

x = 6

$x_{1}$ = 0

$x_{2}$ = 6

b)2x²-10x=0

2x . (x-5) = 0

x . (x-5) = 0

x = 0

x - 5 = 0

x = 0

x = 5

$x_{1}$ = 0

$x_{2}$ = 5

c) 5x² +40x=0

5x . (x + 8) = 0 : 5

x . (x+8) = 0

x = 0

x + 8 = 0

x = 0

x = -8

$x_{1}$ = -8

$x_{2}$ = 0

d)-3x²=0​ . (-1)

3x² = 0 : (3)

x² = 0

x = 0

Explicação passo-a-passo: