7.5x^2+.64x-894.72=0

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Solution for 7.5x^2+.64x-894.72=0 equation:


Simplifying
7.5x2 + 0.64x + -894.72 = 0

Reorder the terms:
-894.72 + 0.64x + 7.5x2 = 0

Solving
-894.72 + 0.64x + 7.5x2 = 0

Solving for variable 'x'.

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

Divide each side by '7.5'.
-119.296 + 0.08533333333x + x2 = 0

Move the constant term to the right:

Add '119.296' to each side of the equation.
-119.296 + 0.08533333333x + 119.296 + x2 = 0 + 119.296

Reorder the terms:
-119.296 + 119.296 + 0.08533333333x + x2 = 0 + 119.296

Combine like terms: -119.296 + 119.296 = 0.000
0.000 + 0.08533333333x + x2 = 0 + 119.296
0.08533333333x + x2 = 0 + 119.296

Combine like terms: 0 + 119.296 = 119.296
0.08533333333x + x2 = 119.296

The x term is 0.08533333333x.  Take half its coefficient (0.04266666667).
Square it (0.001820444445) and add it to both sides.

Add '0.001820444445' to each side of the equation.
0.08533333333x + 0.001820444445 + x2 = 119.296 + 0.001820444445

Reorder the terms:
0.001820444445 + 0.08533333333x + x2 = 119.296 + 0.001820444445

Combine like terms: 119.296 + 0.001820444445 = 119.297820444445
0.001820444445 + 0.08533333333x + x2 = 119.297820444445

Factor a perfect square on the left side:
(x + 0.04266666667)(x + 0.04266666667) = 119.297820444445

Calculate the square root of the right side: 10.922354162

Break this problem into two subproblems by setting 
(x + 0.04266666667) equal to 10.922354162 and -10.922354162.

Subproblem 1

x + 0.04266666667 = 10.922354162 Simplifying x + 0.04266666667 = 10.922354162 Reorder the terms: 0.04266666667 + x = 10.922354162 Solving 0.04266666667 + x = 10.922354162 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.04266666667' to each side of the equation. 0.04266666667 + -0.04266666667 + x = 10.922354162 + -0.04266666667 Combine like terms: 0.04266666667 + -0.04266666667 = 0.00000000000 0.00000000000 + x = 10.922354162 + -0.04266666667 x = 10.922354162 + -0.04266666667 Combine like terms: 10.922354162 + -0.04266666667 = 10.87968749533 x = 10.87968749533 Simplifying x = 10.87968749533

Subproblem 2

x + 0.04266666667 = -10.922354162 Simplifying x + 0.04266666667 = -10.922354162 Reorder the terms: 0.04266666667 + x = -10.922354162 Solving 0.04266666667 + x = -10.922354162 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.04266666667' to each side of the equation. 0.04266666667 + -0.04266666667 + x = -10.922354162 + -0.04266666667 Combine like terms: 0.04266666667 + -0.04266666667 = 0.00000000000 0.00000000000 + x = -10.922354162 + -0.04266666667 x = -10.922354162 + -0.04266666667 Combine like terms: -10.922354162 + -0.04266666667 = -10.96502082867 x = -10.96502082867 Simplifying x = -10.96502082867

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.87968749533, -10.96502082867}

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