x^2-4x+5=(x-2)(x+2)

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Solution for x^2-4x+5=(x-2)(x+2) equation:


Simplifying
x2 + -4x + 5 = (x + -2)(x + 2)

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

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

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

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

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

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

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

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

Solving
5 + -4x = -4

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 = -4 + -5

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

Combine like terms: -4 + -5 = -9
-4x = -9

Divide each side by '-4'.
x = 2.25

Simplifying
x = 2.25

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