-4x^2+29x+30=0

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Solution for -4x^2+29x+30=0 equation:


Simplifying
-4x2 + 29x + 30 = 0

Reorder the terms:
30 + 29x + -4x2 = 0

Solving
30 + 29x + -4x2 = 0

Solving for variable 'x'.

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

Divide each side by '-4'.
-7.5 + -7.25x + x2 = 0

Move the constant term to the right:

Add '7.5' to each side of the equation.
-7.5 + -7.25x + 7.5 + x2 = 0 + 7.5

Reorder the terms:
-7.5 + 7.5 + -7.25x + x2 = 0 + 7.5

Combine like terms: -7.5 + 7.5 = 0.0
0.0 + -7.25x + x2 = 0 + 7.5
-7.25x + x2 = 0 + 7.5

Combine like terms: 0 + 7.5 = 7.5
-7.25x + x2 = 7.5

The x term is -7.25x.  Take half its coefficient (-3.625).
Square it (13.140625) and add it to both sides.

Add '13.140625' to each side of the equation.
-7.25x + 13.140625 + x2 = 7.5 + 13.140625

Reorder the terms:
13.140625 + -7.25x + x2 = 7.5 + 13.140625

Combine like terms: 7.5 + 13.140625 = 20.640625
13.140625 + -7.25x + x2 = 20.640625

Factor a perfect square on the left side:
(x + -3.625)(x + -3.625) = 20.640625

Calculate the square root of the right side: 4.543195461

Break this problem into two subproblems by setting 
(x + -3.625) equal to 4.543195461 and -4.543195461.

Subproblem 1

x + -3.625 = 4.543195461 Simplifying x + -3.625 = 4.543195461 Reorder the terms: -3.625 + x = 4.543195461 Solving -3.625 + x = 4.543195461 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.625' to each side of the equation. -3.625 + 3.625 + x = 4.543195461 + 3.625 Combine like terms: -3.625 + 3.625 = 0.000 0.000 + x = 4.543195461 + 3.625 x = 4.543195461 + 3.625 Combine like terms: 4.543195461 + 3.625 = 8.168195461 x = 8.168195461 Simplifying x = 8.168195461

Subproblem 2

x + -3.625 = -4.543195461 Simplifying x + -3.625 = -4.543195461 Reorder the terms: -3.625 + x = -4.543195461 Solving -3.625 + x = -4.543195461 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.625' to each side of the equation. -3.625 + 3.625 + x = -4.543195461 + 3.625 Combine like terms: -3.625 + 3.625 = 0.000 0.000 + x = -4.543195461 + 3.625 x = -4.543195461 + 3.625 Combine like terms: -4.543195461 + 3.625 = -0.918195461 x = -0.918195461 Simplifying x = -0.918195461

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.168195461, -0.918195461}

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