(x-1)(x+5)=(x*x)-2

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Solution for (x-1)(x+5)=(x*x)-2 equation:


Simplifying
(x + -1)(x + 5) = (x * x) + -2

Reorder the terms:
(-1 + x)(x + 5) = (x * x) + -2

Reorder the terms:
(-1 + x)(5 + x) = (x * x) + -2

Multiply (-1 + x) * (5 + x)
(-1(5 + x) + x(5 + x)) = (x * x) + -2
((5 * -1 + x * -1) + x(5 + x)) = (x * x) + -2
((-5 + -1x) + x(5 + x)) = (x * x) + -2
(-5 + -1x + (5 * x + x * x)) = (x * x) + -2
(-5 + -1x + (5x + x2)) = (x * x) + -2

Combine like terms: -1x + 5x = 4x
(-5 + 4x + x2) = (x * x) + -2

Multiply x * x
-5 + 4x + x2 = (x2) + -2
-5 + 4x + x2 = x2 + -2

Reorder the terms:
-5 + 4x + x2 = -2 + x2

Add '-1x2' to each side of the equation.
-5 + 4x + x2 + -1x2 = -2 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-5 + 4x + 0 = -2 + x2 + -1x2
-5 + 4x = -2 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-5 + 4x = -2 + 0
-5 + 4x = -2

Solving
-5 + 4x = -2

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + 4x = -2 + 5

Combine like terms: -5 + 5 = 0
0 + 4x = -2 + 5
4x = -2 + 5

Combine like terms: -2 + 5 = 3
4x = 3

Divide each side by '4'.
x = 0.75

Simplifying
x = 0.75

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