Question

tìm x

\(2x\left(x-5\right)-x\left(3+2x\right)=26\)

Answer 1

2x( x-5) - x( 3+2x) = 26

=> 2x^2 - 10x - 3x - 2x^2 = 26

=> -13x= 26

=> x= -2

Answer 2

2x(x-5)-x(3+2x)=26

2x^2-10x-3x-2x^2=26

-10x-3x=26

-x(10+3)=26

-x.13=26

-x=2

=>x=-2

Answer 3

2x.x-2x.5-x.3-x.2x=26

3x-10x-3x-3x=26

-13x=26

x=26:(-13)

x=-2

Answer 4

2x ( x - 5 ) - x ( 3 + 2x ) = 26

=> 2x² - 10x - 3x - 2x²  = 26

=> - 13x = 26

=> x = -2

HỌC TỐT~~~