[(x+1)(x+1)]=9

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Solution for [(x+1)(x+1)]=9 equation:


Simplifying
[(x + 1)(x + 1)] = 9

Reorder the terms:
[(1 + x)(x + 1)] = 9

Reorder the terms:
[(1 + x)(1 + x)] = 9

Multiply (1 + x) * (1 + x)
[(1(1 + x) + x(1 + x))] = 9
[((1 * 1 + x * 1) + x(1 + x))] = 9
[((1 + 1x) + x(1 + x))] = 9
[(1 + 1x + (1 * x + x * x))] = 9
[(1 + 1x + (1x + x2))] = 9

Combine like terms: 1x + 1x = 2x
[(1 + 2x + x2)] = 9
[1 + 2x + x2] = 9

Remove brackets around [1 + 2x + x2]
1 + 2x + x2 = 9

Solving
1 + 2x + x2 = 9

Solving for variable 'x'.

Reorder the terms:
1 + -9 + 2x + x2 = 9 + -9

Combine like terms: 1 + -9 = -8
-8 + 2x + x2 = 9 + -9

Combine like terms: 9 + -9 = 0
-8 + 2x + x2 = 0

Factor a trinomial.
(-4 + -1x)(2 + -1x) = 0

Subproblem 1

Set the factor '(-4 + -1x)' equal to zero and attempt to solve: Simplifying -4 + -1x = 0 Solving -4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1x = 0 + 4 -1x = 0 + 4 Combine like terms: 0 + 4 = 4 -1x = 4 Divide each side by '-1'. x = -4 Simplifying x = -4

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {-4, 2}

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