.09x^2-5x-7000=0

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Solution for .09x^2-5x-7000=0 equation:


Simplifying
0.09x2 + -5x + -7000 = 0

Reorder the terms:
-7000 + -5x + 0.09x2 = 0

Solving
-7000 + -5x + 0.09x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.09'.
-77777.77778 + -55.55555556x + x2 = 0

Move the constant term to the right:

Add '77777.77778' to each side of the equation.
-77777.77778 + -55.55555556x + 77777.77778 + x2 = 0 + 77777.77778

Reorder the terms:
-77777.77778 + 77777.77778 + -55.55555556x + x2 = 0 + 77777.77778

Combine like terms: -77777.77778 + 77777.77778 = 0.00000
0.00000 + -55.55555556x + x2 = 0 + 77777.77778
-55.55555556x + x2 = 0 + 77777.77778

Combine like terms: 0 + 77777.77778 = 77777.77778
-55.55555556x + x2 = 77777.77778

The x term is -55.55555556x.  Take half its coefficient (-27.77777778).
Square it (771.6049384) and add it to both sides.

Add '771.6049384' to each side of the equation.
-55.55555556x + 771.6049384 + x2 = 77777.77778 + 771.6049384

Reorder the terms:
771.6049384 + -55.55555556x + x2 = 77777.77778 + 771.6049384

Combine like terms: 77777.77778 + 771.6049384 = 78549.3827184
771.6049384 + -55.55555556x + x2 = 78549.3827184

Factor a perfect square on the left side:
(x + -27.77777778)(x + -27.77777778) = 78549.3827184

Calculate the square root of the right side: 280.266627907

Break this problem into two subproblems by setting 
(x + -27.77777778) equal to 280.266627907 and -280.266627907.

Subproblem 1

x + -27.77777778 = 280.266627907 Simplifying x + -27.77777778 = 280.266627907 Reorder the terms: -27.77777778 + x = 280.266627907 Solving -27.77777778 + x = 280.266627907 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '27.77777778' to each side of the equation. -27.77777778 + 27.77777778 + x = 280.266627907 + 27.77777778 Combine like terms: -27.77777778 + 27.77777778 = 0.00000000 0.00000000 + x = 280.266627907 + 27.77777778 x = 280.266627907 + 27.77777778 Combine like terms: 280.266627907 + 27.77777778 = 308.044405687 x = 308.044405687 Simplifying x = 308.044405687

Subproblem 2

x + -27.77777778 = -280.266627907 Simplifying x + -27.77777778 = -280.266627907 Reorder the terms: -27.77777778 + x = -280.266627907 Solving -27.77777778 + x = -280.266627907 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '27.77777778' to each side of the equation. -27.77777778 + 27.77777778 + x = -280.266627907 + 27.77777778 Combine like terms: -27.77777778 + 27.77777778 = 0.00000000 0.00000000 + x = -280.266627907 + 27.77777778 x = -280.266627907 + 27.77777778 Combine like terms: -280.266627907 + 27.77777778 = -252.488850127 x = -252.488850127 Simplifying x = -252.488850127

Solution

The solution to the problem is based on the solutions from the subproblems. x = {308.044405687, -252.488850127}

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