9x^2+24x+144=20

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Solution for 9x^2+24x+144=20 equation:


Simplifying
9x2 + 24x + 144 = 20

Reorder the terms:
144 + 24x + 9x2 = 20

Solving
144 + 24x + 9x2 = 20

Solving for variable 'x'.

Reorder the terms:
144 + -20 + 24x + 9x2 = 20 + -20

Combine like terms: 144 + -20 = 124
124 + 24x + 9x2 = 20 + -20

Combine like terms: 20 + -20 = 0
124 + 24x + 9x2 = 0

Begin completing the square.  Divide all terms by
9 the coefficient of the squared term: 

Divide each side by '9'.
13.77777778 + 2.666666667x + x2 = 0

Move the constant term to the right:

Add '-13.77777778' to each side of the equation.
13.77777778 + 2.666666667x + -13.77777778 + x2 = 0 + -13.77777778

Reorder the terms:
13.77777778 + -13.77777778 + 2.666666667x + x2 = 0 + -13.77777778

Combine like terms: 13.77777778 + -13.77777778 = 0.00000000
0.00000000 + 2.666666667x + x2 = 0 + -13.77777778
2.666666667x + x2 = 0 + -13.77777778

Combine like terms: 0 + -13.77777778 = -13.77777778
2.666666667x + x2 = -13.77777778

The x term is 2.666666667x.  Take half its coefficient (1.333333334).
Square it (1.777777780) and add it to both sides.

Add '1.777777780' to each side of the equation.
2.666666667x + 1.777777780 + x2 = -13.77777778 + 1.777777780

Reorder the terms:
1.777777780 + 2.666666667x + x2 = -13.77777778 + 1.777777780

Combine like terms: -13.77777778 + 1.777777780 = -12
1.777777780 + 2.666666667x + x2 = -12

Factor a perfect square on the left side:
(x + 1.333333334)(x + 1.333333334) = -12

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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