x^2+15x+144=0

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Solution for x^2+15x+144=0 equation:


Simplifying
x2 + 15x + 144 = 0

Reorder the terms:
144 + 15x + x2 = 0

Solving
144 + 15x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-144' to each side of the equation.
144 + 15x + -144 + x2 = 0 + -144

Reorder the terms:
144 + -144 + 15x + x2 = 0 + -144

Combine like terms: 144 + -144 = 0
0 + 15x + x2 = 0 + -144
15x + x2 = 0 + -144

Combine like terms: 0 + -144 = -144
15x + x2 = -144

The x term is 15x.  Take half its coefficient (7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
15x + 56.25 + x2 = -144 + 56.25

Reorder the terms:
56.25 + 15x + x2 = -144 + 56.25

Combine like terms: -144 + 56.25 = -87.75
56.25 + 15x + x2 = -87.75

Factor a perfect square on the left side:
(x + 7.5)(x + 7.5) = -87.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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