7=8x-3x^2

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Solution for 7=8x-3x^2 equation: 


Simplifying
7 = 8x + -3x2

Solving
7 = 8x + -3x2

Solving for variable 'x'.

Reorder the terms:
7 + -8x + 3x2 = 8x + -8x + -3x2 + 3x2

Combine like terms: 8x + -8x = 0
7 + -8x + 3x2 = 0 + -3x2 + 3x2
7 + -8x + 3x2 = -3x2 + 3x2

Combine like terms: -3x2 + 3x2 = 0
7 + -8x + 3x2 = 0

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

Divide each side by '3'.
2.333333333 + -2.666666667x + x2 = 0

Move the constant term to the right:

Add '-2.333333333' to each side of the equation.
2.333333333 + -2.666666667x + -2.333333333 + x2 = 0 + -2.333333333

Reorder the terms:
2.333333333 + -2.333333333 + -2.666666667x + x2 = 0 + -2.333333333

Combine like terms: 2.333333333 + -2.333333333 = 0.000000000
0.000000000 + -2.666666667x + x2 = 0 + -2.333333333
-2.666666667x + x2 = 0 + -2.333333333

Combine like terms: 0 + -2.333333333 = -2.333333333
-2.666666667x + x2 = -2.333333333

The x term is -2.666666667x.  Take half its coefficient (-1.333333334).
Square it (1.777777780) and add it to both sides.

Add '1.777777780' to each side of the equation.
-2.666666667x + 1.777777780 + x2 = -2.333333333 + 1.777777780

Reorder the terms:
1.777777780 + -2.666666667x + x2 = -2.333333333 + 1.777777780

Combine like terms: -2.333333333 + 1.777777780 = -0.555555553
1.777777780 + -2.666666667x + x2 = -0.555555553

Factor a perfect square on the left side:
(x + -1.333333334)(x + -1.333333334) = -0.555555553

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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