x^2-2x-3=(x+1)(x-3)

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Solution for x^2-2x-3=(x+1)(x-3) equation:


Simplifying
x2 + -2x + -3 = (x + 1)(x + -3)

Reorder the terms:
-3 + -2x + x2 = (x + 1)(x + -3)

Reorder the terms:
-3 + -2x + x2 = (1 + x)(x + -3)

Reorder the terms:
-3 + -2x + x2 = (1 + x)(-3 + x)

Multiply (1 + x) * (-3 + x)
-3 + -2x + x2 = (1(-3 + x) + x(-3 + x))
-3 + -2x + x2 = ((-3 * 1 + x * 1) + x(-3 + x))
-3 + -2x + x2 = ((-3 + 1x) + x(-3 + x))
-3 + -2x + x2 = (-3 + 1x + (-3 * x + x * x))
-3 + -2x + x2 = (-3 + 1x + (-3x + x2))

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

Add '3' to each side of the equation.
-3 + -2x + 3 + x2 = -3 + -2x + 3 + x2

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

Combine like terms: -3 + 3 = 0
0 + -2x + x2 = -3 + -2x + 3 + x2
-2x + x2 = -3 + -2x + 3 + x2

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

Combine like terms: -3 + 3 = 0
-2x + x2 = 0 + -2x + x2
-2x + x2 = -2x + x2

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

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

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

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

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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