9x^2-72x+145=0

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Solution for 9x^2-72x+145=0 equation:


Simplifying
9x2 + -72x + 145 = 0

Reorder the terms:
145 + -72x + 9x2 = 0

Solving
145 + -72x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
16.11111111 + -8x + x2 = 0

Move the constant term to the right:

Add '-16.11111111' to each side of the equation.
16.11111111 + -8x + -16.11111111 + x2 = 0 + -16.11111111

Reorder the terms:
16.11111111 + -16.11111111 + -8x + x2 = 0 + -16.11111111

Combine like terms: 16.11111111 + -16.11111111 = 0.00000000
0.00000000 + -8x + x2 = 0 + -16.11111111
-8x + x2 = 0 + -16.11111111

Combine like terms: 0 + -16.11111111 = -16.11111111
-8x + x2 = -16.11111111

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = -16.11111111 + 16

Reorder the terms:
16 + -8x + x2 = -16.11111111 + 16

Combine like terms: -16.11111111 + 16 = -0.11111111
16 + -8x + x2 = -0.11111111

Factor a perfect square on the left side:
(x + -4)(x + -4) = -0.11111111

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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