18x^2+13=30x

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Solution for 18x^2+13=30x equation:


Simplifying
18x2 + 13 = 30x

Reorder the terms:
13 + 18x2 = 30x

Solving
13 + 18x2 = 30x

Solving for variable 'x'.

Reorder the terms:
13 + -30x + 18x2 = 30x + -30x

Combine like terms: 30x + -30x = 0
13 + -30x + 18x2 = 0

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

Divide each side by '18'.
0.7222222222 + -1.666666667x + x2 = 0

Move the constant term to the right:

Add '-0.7222222222' to each side of the equation.
0.7222222222 + -1.666666667x + -0.7222222222 + x2 = 0 + -0.7222222222

Reorder the terms:
0.7222222222 + -0.7222222222 + -1.666666667x + x2 = 0 + -0.7222222222

Combine like terms: 0.7222222222 + -0.7222222222 = 0.0000000000
0.0000000000 + -1.666666667x + x2 = 0 + -0.7222222222
-1.666666667x + x2 = 0 + -0.7222222222

Combine like terms: 0 + -0.7222222222 = -0.7222222222
-1.666666667x + x2 = -0.7222222222

The x term is -1.666666667x.  Take half its coefficient (-0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
-1.666666667x + 0.6944444447 + x2 = -0.7222222222 + 0.6944444447

Reorder the terms:
0.6944444447 + -1.666666667x + x2 = -0.7222222222 + 0.6944444447

Combine like terms: -0.7222222222 + 0.6944444447 = -0.0277777775
0.6944444447 + -1.666666667x + x2 = -0.0277777775

Factor a perfect square on the left side:
(x + -0.8333333335)(x + -0.8333333335) = -0.0277777775

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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