x^2-(x+25)=(x+2)(x-2)

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Solution for x^2-(x+25)=(x+2)(x-2) equation:


Simplifying
x2 + -1(x + 25) = (x + 2)(x + -2)

Reorder the terms:
x2 + -1(25 + x) = (x + 2)(x + -2)
x2 + (25 * -1 + x * -1) = (x + 2)(x + -2)
x2 + (-25 + -1x) = (x + 2)(x + -2)

Reorder the terms:
-25 + -1x + x2 = (x + 2)(x + -2)

Reorder the terms:
-25 + -1x + x2 = (2 + x)(x + -2)

Reorder the terms:
-25 + -1x + x2 = (2 + x)(-2 + x)

Multiply (2 + x) * (-2 + x)
-25 + -1x + x2 = (2(-2 + x) + x(-2 + x))
-25 + -1x + x2 = ((-2 * 2 + x * 2) + x(-2 + x))
-25 + -1x + x2 = ((-4 + 2x) + x(-2 + x))
-25 + -1x + x2 = (-4 + 2x + (-2 * x + x * x))
-25 + -1x + x2 = (-4 + 2x + (-2x + x2))

Combine like terms: 2x + -2x = 0
-25 + -1x + x2 = (-4 + 0 + x2)
-25 + -1x + x2 = (-4 + x2)

Add '-1x2' to each side of the equation.
-25 + -1x + x2 + -1x2 = -4 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-25 + -1x + 0 = -4 + x2 + -1x2
-25 + -1x = -4 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-25 + -1x = -4 + 0
-25 + -1x = -4

Solving
-25 + -1x = -4

Solving for variable 'x'.

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

Add '25' to each side of the equation.
-25 + 25 + -1x = -4 + 25

Combine like terms: -25 + 25 = 0
0 + -1x = -4 + 25
-1x = -4 + 25

Combine like terms: -4 + 25 = 21
-1x = 21

Divide each side by '-1'.
x = -21

Simplifying
x = -21

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