(x+10)(x+10)=-91

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Solution for (x+10)(x+10)=-91 equation:


Simplifying
(x + 10)(x + 10) = -91

Reorder the terms:
(10 + x)(x + 10) = -91

Reorder the terms:
(10 + x)(10 + x) = -91

Multiply (10 + x) * (10 + x)
(10(10 + x) + x(10 + x)) = -91
((10 * 10 + x * 10) + x(10 + x)) = -91
((100 + 10x) + x(10 + x)) = -91
(100 + 10x + (10 * x + x * x)) = -91
(100 + 10x + (10x + x2)) = -91

Combine like terms: 10x + 10x = 20x
(100 + 20x + x2) = -91

Solving
100 + 20x + x2 = -91

Solving for variable 'x'.

Reorder the terms:
100 + 91 + 20x + x2 = -91 + 91

Combine like terms: 100 + 91 = 191
191 + 20x + x2 = -91 + 91

Combine like terms: -91 + 91 = 0
191 + 20x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-191' to each side of the equation.
191 + 20x + -191 + x2 = 0 + -191

Reorder the terms:
191 + -191 + 20x + x2 = 0 + -191

Combine like terms: 191 + -191 = 0
0 + 20x + x2 = 0 + -191
20x + x2 = 0 + -191

Combine like terms: 0 + -191 = -191
20x + x2 = -191

The x term is 20x.  Take half its coefficient (10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
20x + 100 + x2 = -191 + 100

Reorder the terms:
100 + 20x + x2 = -191 + 100

Combine like terms: -191 + 100 = -91
100 + 20x + x2 = -91

Factor a perfect square on the left side:
(x + 10)(x + 10) = -91

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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