Solution equation: 2x + 2x − x + 2x − 2 = x2 − 2x2 − 2x

Solution equation: 2x + 2x − x + 2x − 2 = x2 − 2x2 − 2x

The original equation is: 2 (x + 1) x-x + 2x − 2 = x2 − 2x (x − 2), both sides of the equation multiply x (X-2) to get: 2 (x + 1) (X-2) - x (x + 2) = x2-2, simplify to: - 4x = 2, the solution is: x = - 12, substitute x = - 12 into x (X-2) = 54 ≠ 0, so the solution of the equation is: x = - 12

2X (2x-23) - (1 + 2x) (2x-1) = 24 solve the equation now, thank you

2x(2x-23)-(1+2x)(2x-1)=24
4x^2-46x-(4x^2-1)=24
4x^2-46x-4x^2+1=24
-46x=23
x=-1/2

Solving the equation - 2x = | x + 2|

Square on both sides

It's a factor of 42 and a multiple of 7. It could be 7, 14, 21, 42; it's a multiple of 2 and 3. What's that number?

42