(x+1)2-(x-1)2=x+9

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Solution for (x+1)2-(x-1)2=x+9 equation:


Simplifying
(x + 1) * 2 + -1(x + -1) * 2 = x + 9

Reorder the terms:
(1 + x) * 2 + -1(x + -1) * 2 = x + 9

Reorder the terms for easier multiplication:
2(1 + x) + -1(x + -1) * 2 = x + 9
(1 * 2 + x * 2) + -1(x + -1) * 2 = x + 9
(2 + 2x) + -1(x + -1) * 2 = x + 9

Reorder the terms:
2 + 2x + -1(-1 + x) * 2 = x + 9

Reorder the terms for easier multiplication:
2 + 2x + -1 * 2(-1 + x) = x + 9

Multiply -1 * 2
2 + 2x + -2(-1 + x) = x + 9
2 + 2x + (-1 * -2 + x * -2) = x + 9
2 + 2x + (2 + -2x) = x + 9

Reorder the terms:
2 + 2 + 2x + -2x = x + 9

Combine like terms: 2 + 2 = 4
4 + 2x + -2x = x + 9

Combine like terms: 2x + -2x = 0
4 + 0 = x + 9
4 = x + 9

Reorder the terms:
4 = 9 + x

Solving
4 = 9 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
4 + -1x = 9 + x + -1x

Combine like terms: x + -1x = 0
4 + -1x = 9 + 0
4 + -1x = 9

Add '-4' to each side of the equation.
4 + -4 + -1x = 9 + -4

Combine like terms: 4 + -4 = 0
0 + -1x = 9 + -4
-1x = 9 + -4

Combine like terms: 9 + -4 = 5
-1x = 5

Divide each side by '-1'.
x = -5

Simplifying
x = -5

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