Question

Рещите пожалуйста уравнения.

Answer 1

Х2=5х

Х2-5х =0

Х(2х-5)=0

Х=0 или 2х-5=0

2x=5

X=2,5

2X2=8x

2X2-8x=0

X(2x-8)=0

×=0

Или

2х-8=0

2х=8

Х=4

3Х2=9Х

3Х2-9х=0

Х(3х-9)=0

Х=0

Или

3х-9=0

3х=9

×=3

Answer 2

1)
${x}^{2} = 5x$
${x}^{2} - 5x= 0$
$x(x - 5) = 0$
$x = 0 \: \: \: x = 5$
2)
$2 {x}^{2} - 8x = 0$
$2x(x - 4)=0$
$x = 0 \: \: \: x = 4$
3)
$3 {x}^{2} - 9x = 0$
$3x(x - 3) = 0$
$x = 0 \: \: \: x = 3$