2x^2=9x-30

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Solution for 2x^2=9x-30 equation:


Simplifying
2x2 = 9x + -30

Reorder the terms:
2x2 = -30 + 9x

Solving
2x2 = -30 + 9x

Solving for variable 'x'.

Reorder the terms:
30 + -9x + 2x2 = -30 + 9x + 30 + -9x

Reorder the terms:
30 + -9x + 2x2 = -30 + 30 + 9x + -9x

Combine like terms: -30 + 30 = 0
30 + -9x + 2x2 = 0 + 9x + -9x
30 + -9x + 2x2 = 9x + -9x

Combine like terms: 9x + -9x = 0
30 + -9x + 2x2 = 0

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

Divide each side by '2'.
15 + -4.5x + x2 = 0

Move the constant term to the right:

Add '-15' to each side of the equation.
15 + -4.5x + -15 + x2 = 0 + -15

Reorder the terms:
15 + -15 + -4.5x + x2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -4.5x + x2 = 0 + -15
-4.5x + x2 = 0 + -15

Combine like terms: 0 + -15 = -15
-4.5x + x2 = -15

The x term is -4.5x.  Take half its coefficient (-2.25).
Square it (5.0625) and add it to both sides.

Add '5.0625' to each side of the equation.
-4.5x + 5.0625 + x2 = -15 + 5.0625

Reorder the terms:
5.0625 + -4.5x + x2 = -15 + 5.0625

Combine like terms: -15 + 5.0625 = -9.9375
5.0625 + -4.5x + x2 = -9.9375

Factor a perfect square on the left side:
(x + -2.25)(x + -2.25) = -9.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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