3x^2-11x-14=-5x^2+30x-30

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Solution for 3x^2-11x-14=-5x^2+30x-30 equation:


Simplifying
3x2 + -11x + -14 = -5x2 + 30x + -30

Reorder the terms:
-14 + -11x + 3x2 = -5x2 + 30x + -30

Reorder the terms:
-14 + -11x + 3x2 = -30 + 30x + -5x2

Solving
-14 + -11x + 3x2 = -30 + 30x + -5x2

Solving for variable 'x'.

Reorder the terms:
-14 + 30 + -11x + -30x + 3x2 + 5x2 = -30 + 30x + -5x2 + 30 + -30x + 5x2

Combine like terms: -14 + 30 = 16
16 + -11x + -30x + 3x2 + 5x2 = -30 + 30x + -5x2 + 30 + -30x + 5x2

Combine like terms: -11x + -30x = -41x
16 + -41x + 3x2 + 5x2 = -30 + 30x + -5x2 + 30 + -30x + 5x2

Combine like terms: 3x2 + 5x2 = 8x2
16 + -41x + 8x2 = -30 + 30x + -5x2 + 30 + -30x + 5x2

Reorder the terms:
16 + -41x + 8x2 = -30 + 30 + 30x + -30x + -5x2 + 5x2

Combine like terms: -30 + 30 = 0
16 + -41x + 8x2 = 0 + 30x + -30x + -5x2 + 5x2
16 + -41x + 8x2 = 30x + -30x + -5x2 + 5x2

Combine like terms: 30x + -30x = 0
16 + -41x + 8x2 = 0 + -5x2 + 5x2
16 + -41x + 8x2 = -5x2 + 5x2

Combine like terms: -5x2 + 5x2 = 0
16 + -41x + 8x2 = 0

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

Divide each side by '8'.
2 + -5.125x + x2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -5.125x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + -5.125x + x2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -5.125x + x2 = 0 + -2
-5.125x + x2 = 0 + -2

Combine like terms: 0 + -2 = -2
-5.125x + x2 = -2

The x term is -5.125x.  Take half its coefficient (-2.5625).
Square it (6.56640625) and add it to both sides.

Add '6.56640625' to each side of the equation.
-5.125x + 6.56640625 + x2 = -2 + 6.56640625

Reorder the terms:
6.56640625 + -5.125x + x2 = -2 + 6.56640625

Combine like terms: -2 + 6.56640625 = 4.56640625
6.56640625 + -5.125x + x2 = 4.56640625

Factor a perfect square on the left side:
(x + -2.5625)(x + -2.5625) = 4.56640625

Calculate the square root of the right side: 2.136915125

Break this problem into two subproblems by setting 
(x + -2.5625) equal to 2.136915125 and -2.136915125.

Subproblem 1

x + -2.5625 = 2.136915125 Simplifying x + -2.5625 = 2.136915125 Reorder the terms: -2.5625 + x = 2.136915125 Solving -2.5625 + x = 2.136915125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5625' to each side of the equation. -2.5625 + 2.5625 + x = 2.136915125 + 2.5625 Combine like terms: -2.5625 + 2.5625 = 0.0000 0.0000 + x = 2.136915125 + 2.5625 x = 2.136915125 + 2.5625 Combine like terms: 2.136915125 + 2.5625 = 4.699415125 x = 4.699415125 Simplifying x = 4.699415125

Subproblem 2

x + -2.5625 = -2.136915125 Simplifying x + -2.5625 = -2.136915125 Reorder the terms: -2.5625 + x = -2.136915125 Solving -2.5625 + x = -2.136915125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5625' to each side of the equation. -2.5625 + 2.5625 + x = -2.136915125 + 2.5625 Combine like terms: -2.5625 + 2.5625 = 0.0000 0.0000 + x = -2.136915125 + 2.5625 x = -2.136915125 + 2.5625 Combine like terms: -2.136915125 + 2.5625 = 0.425584875 x = 0.425584875 Simplifying x = 0.425584875

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.699415125, 0.425584875}

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