0=4x^2+95x-30

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Solution for 0=4x^2+95x-30 equation:


Simplifying
0 = 4x2 + 95x + -30

Reorder the terms:
0 = -30 + 95x + 4x2

Solving
0 = -30 + 95x + 4x2

Solving for variable 'x'.

Combine like terms: 0 + 30 = 30
30 + -95x + -4x2 = -30 + 95x + 4x2 + 30 + -95x + -4x2

Reorder the terms:
30 + -95x + -4x2 = -30 + 30 + 95x + -95x + 4x2 + -4x2

Combine like terms: -30 + 30 = 0
30 + -95x + -4x2 = 0 + 95x + -95x + 4x2 + -4x2
30 + -95x + -4x2 = 95x + -95x + 4x2 + -4x2

Combine like terms: 95x + -95x = 0
30 + -95x + -4x2 = 0 + 4x2 + -4x2
30 + -95x + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
30 + -95x + -4x2 = 0

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-7.5 + 23.75x + x2 = 0

Move the constant term to the right:

Add '7.5' to each side of the equation.
-7.5 + 23.75x + 7.5 + x2 = 0 + 7.5

Reorder the terms:
-7.5 + 7.5 + 23.75x + x2 = 0 + 7.5

Combine like terms: -7.5 + 7.5 = 0.0
0.0 + 23.75x + x2 = 0 + 7.5
23.75x + x2 = 0 + 7.5

Combine like terms: 0 + 7.5 = 7.5
23.75x + x2 = 7.5

The x term is 23.75x.  Take half its coefficient (11.875).
Square it (141.015625) and add it to both sides.

Add '141.015625' to each side of the equation.
23.75x + 141.015625 + x2 = 7.5 + 141.015625

Reorder the terms:
141.015625 + 23.75x + x2 = 7.5 + 141.015625

Combine like terms: 7.5 + 141.015625 = 148.515625
141.015625 + 23.75x + x2 = 148.515625

Factor a perfect square on the left side:
(x + 11.875)(x + 11.875) = 148.515625

Calculate the square root of the right side: 12.186698692

Break this problem into two subproblems by setting 
(x + 11.875) equal to 12.186698692 and -12.186698692.

Subproblem 1

x + 11.875 = 12.186698692 Simplifying x + 11.875 = 12.186698692 Reorder the terms: 11.875 + x = 12.186698692 Solving 11.875 + x = 12.186698692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11.875' to each side of the equation. 11.875 + -11.875 + x = 12.186698692 + -11.875 Combine like terms: 11.875 + -11.875 = 0.000 0.000 + x = 12.186698692 + -11.875 x = 12.186698692 + -11.875 Combine like terms: 12.186698692 + -11.875 = 0.311698692 x = 0.311698692 Simplifying x = 0.311698692

Subproblem 2

x + 11.875 = -12.186698692 Simplifying x + 11.875 = -12.186698692 Reorder the terms: 11.875 + x = -12.186698692 Solving 11.875 + x = -12.186698692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11.875' to each side of the equation. 11.875 + -11.875 + x = -12.186698692 + -11.875 Combine like terms: 11.875 + -11.875 = 0.000 0.000 + x = -12.186698692 + -11.875 x = -12.186698692 + -11.875 Combine like terms: -12.186698692 + -11.875 = -24.061698692 x = -24.061698692 Simplifying x = -24.061698692

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.311698692, -24.061698692}

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