Question

RESOLVA AS EQUAÇÕES DO 2º GRAU INCOMPLETAS. C=0.

$x^{2}-5X=0$

$6 x^{2}-3X=0$

$x^{2}-9X=0$

$x^{2}-10X=0$

$x^{2}-5X=0$

$9 x^{2}-18X=0$

Answer 1

x² -5x = 0
x.(x - 5) = 0
x = 0
x- 5 = 0
x = +5

S{0,5}

6x² -3x = 0   ÷ 3
2x² -x = 0
x(2x -1) = 0
x = 0
2x - 1 = 0
2x = +1
x = 1/2    ou 0,5

S{1,2  ou  0,5}


x² - 9x = 0
x(x -9)=0
x = 0
x - 9 = 0
x = +9

S{0 , 9}


x² - 10x = 0
x(x - 10)=0
x = 0
x -10 = 0
x = +10

S{0 , 10}


x² -5x = 0
x(x -5) = 0
x = 0
x - 5= 0
x = +5

S{0 , 5}


9x² -18x = 0    ÷9
x² - 2x = 0
x(x - 2) = 0
x = 0
x - 2 = 0
x = +2

S{0 , 2}