Question

Quais são as resposta da foto

Answer 1

a
x² - 6x = 0
x ( x - 6) = 0
x = 0 ****
x - 6 = 0
x = 6 ****
b
8x² - 6x = 0
2x ( 4x - 3 ) =  0
2x = 0
x = 0/2 = 0 ****
4x - 3 = 0
4x = 3
x = 3/4 ****
c
x² - 16 = 0
x² =16 
Vx²  =+- V16
x = +-4 ***
d
-4x² + 12x = 0  ( - 1)
4x² - 12x = 0
simplifica por 4
x² - 3x = 0
x ( x - 3 ) = 0
x = 0 ***
x - 3 = 0
x = 3 ****
e
x² - 1 = 0
x² = 1
Vx² = +- V1
x = +-1 ***
f
6x² - x =0
x ( 6x  - 1 )  = 0
x = 0 ****
6x - 1 = 0
6x = 1
x = 1/6 ****