18x^2-15x+40=0

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Solution for 18x^2-15x+40=0 equation:


Simplifying
18x2 + -15x + 40 = 0

Reorder the terms:
40 + -15x + 18x2 = 0

Solving
40 + -15x + 18x2 = 0

Solving for variable 'x'.

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

Divide each side by '18'.
2.222222222 + -0.8333333333x + x2 = 0

Move the constant term to the right:

Add '-2.222222222' to each side of the equation.
2.222222222 + -0.8333333333x + -2.222222222 + x2 = 0 + -2.222222222

Reorder the terms:
2.222222222 + -2.222222222 + -0.8333333333x + x2 = 0 + -2.222222222

Combine like terms: 2.222222222 + -2.222222222 = 0.000000000
0.000000000 + -0.8333333333x + x2 = 0 + -2.222222222
-0.8333333333x + x2 = 0 + -2.222222222

Combine like terms: 0 + -2.222222222 = -2.222222222
-0.8333333333x + x2 = -2.222222222

The x term is -0.8333333333x.  Take half its coefficient (-0.4166666667).
Square it (0.1736111111) and add it to both sides.

Add '0.1736111111' to each side of the equation.
-0.8333333333x + 0.1736111111 + x2 = -2.222222222 + 0.1736111111

Reorder the terms:
0.1736111111 + -0.8333333333x + x2 = -2.222222222 + 0.1736111111

Combine like terms: -2.222222222 + 0.1736111111 = -2.0486111109
0.1736111111 + -0.8333333333x + x2 = -2.0486111109

Factor a perfect square on the left side:
(x + -0.4166666667)(x + -0.4166666667) = -2.0486111109

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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