x^2+20x+135=0

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Solution for x^2+20x+135=0 equation:


Simplifying
x2 + 20x + 135 = 0

Reorder the terms:
135 + 20x + x2 = 0

Solving
135 + 20x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-135' to each side of the equation.
135 + 20x + -135 + x2 = 0 + -135

Reorder the terms:
135 + -135 + 20x + x2 = 0 + -135

Combine like terms: 135 + -135 = 0
0 + 20x + x2 = 0 + -135
20x + x2 = 0 + -135

Combine like terms: 0 + -135 = -135
20x + x2 = -135

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 = -135 + 100

Reorder the terms:
100 + 20x + x2 = -135 + 100

Combine like terms: -135 + 100 = -35
100 + 20x + x2 = -35

Factor a perfect square on the left side:
(x + 10)(x + 10) = -35

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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