3x^2-9x=-7

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Solution for 3x^2-9x=-7 equation:


Simplifying
3x2 + -9x = -7

Reorder the terms:
-9x + 3x2 = -7

Solving
-9x + 3x2 = -7

Solving for variable 'x'.

Reorder the terms:
7 + -9x + 3x2 = -7 + 7

Combine like terms: -7 + 7 = 0
7 + -9x + 3x2 = 0

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

Divide each side by '3'.
2.333333333 + -3x + x2 = 0

Move the constant term to the right:

Add '-2.333333333' to each side of the equation.
2.333333333 + -3x + -2.333333333 + x2 = 0 + -2.333333333

Reorder the terms:
2.333333333 + -2.333333333 + -3x + x2 = 0 + -2.333333333

Combine like terms: 2.333333333 + -2.333333333 = 0.000000000
0.000000000 + -3x + x2 = 0 + -2.333333333
-3x + x2 = 0 + -2.333333333

Combine like terms: 0 + -2.333333333 = -2.333333333
-3x + x2 = -2.333333333

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = -2.333333333 + 2.25

Reorder the terms:
2.25 + -3x + x2 = -2.333333333 + 2.25

Combine like terms: -2.333333333 + 2.25 = -0.083333333
2.25 + -3x + x2 = -0.083333333

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = -0.083333333

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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