(x-1)*(x+2)=x^2

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Solution for (x-1)*(x+2)=x^2 equation:


Simplifying
(x + -1)(x + 2) = x2

Reorder the terms:
(-1 + x)(x + 2) = x2

Reorder the terms:
(-1 + x)(2 + x) = x2

Multiply (-1 + x) * (2 + x)
(-1(2 + x) + x(2 + x)) = x2
((2 * -1 + x * -1) + x(2 + x)) = x2
((-2 + -1x) + x(2 + x)) = x2
(-2 + -1x + (2 * x + x * x)) = x2
(-2 + -1x + (2x + x2)) = x2

Combine like terms: -1x + 2x = 1x
(-2 + 1x + x2) = x2

Add '-1x2' to each side of the equation.
-2 + 1x + x2 + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-2 + 1x + 0 = x2 + -1x2
-2 + 1x = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-2 + 1x = 0

Solving
-2 + 1x = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '2' to each side of the equation.
-2 + 2 + 1x = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 1x = 0 + 2
1x = 0 + 2

Combine like terms: 0 + 2 = 2
1x = 2

Divide each side by '1'.
x = 2

Simplifying
x = 2

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