(x-1)(x+3)=-8

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Solution for (x-1)(x+3)=-8 equation:


Simplifying
(x + -1)(x + 3) = -8

Reorder the terms:
(-1 + x)(x + 3) = -8

Reorder the terms:
(-1 + x)(3 + x) = -8

Multiply (-1 + x) * (3 + x)
(-1(3 + x) + x(3 + x)) = -8
((3 * -1 + x * -1) + x(3 + x)) = -8
((-3 + -1x) + x(3 + x)) = -8
(-3 + -1x + (3 * x + x * x)) = -8
(-3 + -1x + (3x + x2)) = -8

Combine like terms: -1x + 3x = 2x
(-3 + 2x + x2) = -8

Solving
-3 + 2x + x2 = -8

Solving for variable 'x'.

Reorder the terms:
-3 + 8 + 2x + x2 = -8 + 8

Combine like terms: -3 + 8 = 5
5 + 2x + x2 = -8 + 8

Combine like terms: -8 + 8 = 0
5 + 2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + 2x + -5 + x2 = 0 + -5

Reorder the terms:
5 + -5 + 2x + x2 = 0 + -5

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

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

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

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

Reorder the terms:
1 + 2x + x2 = -5 + 1

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

Factor a perfect square on the left side:
(x + 1)(x + 1) = -4

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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