4x=2x^2+17x-30

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Solution for 4x=2x^2+17x-30 equation:


Simplifying
4x = 2x2 + 17x + -30

Reorder the terms:
4x = -30 + 17x + 2x2

Solving
4x = -30 + 17x + 2x2

Solving for variable 'x'.

Reorder the terms:
30 + 4x + -17x + -2x2 = -30 + 17x + 2x2 + 30 + -17x + -2x2

Combine like terms: 4x + -17x = -13x
30 + -13x + -2x2 = -30 + 17x + 2x2 + 30 + -17x + -2x2

Reorder the terms:
30 + -13x + -2x2 = -30 + 30 + 17x + -17x + 2x2 + -2x2

Combine like terms: -30 + 30 = 0
30 + -13x + -2x2 = 0 + 17x + -17x + 2x2 + -2x2
30 + -13x + -2x2 = 17x + -17x + 2x2 + -2x2

Combine like terms: 17x + -17x = 0
30 + -13x + -2x2 = 0 + 2x2 + -2x2
30 + -13x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
30 + -13x + -2x2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-15 + 6.5x + x2 = 0

Move the constant term to the right:

Add '15' to each side of the equation.
-15 + 6.5x + 15 + x2 = 0 + 15

Reorder the terms:
-15 + 15 + 6.5x + x2 = 0 + 15

Combine like terms: -15 + 15 = 0
0 + 6.5x + x2 = 0 + 15
6.5x + x2 = 0 + 15

Combine like terms: 0 + 15 = 15
6.5x + x2 = 15

The x term is 6.5x.  Take half its coefficient (3.25).
Square it (10.5625) and add it to both sides.

Add '10.5625' to each side of the equation.
6.5x + 10.5625 + x2 = 15 + 10.5625

Reorder the terms:
10.5625 + 6.5x + x2 = 15 + 10.5625

Combine like terms: 15 + 10.5625 = 25.5625
10.5625 + 6.5x + x2 = 25.5625

Factor a perfect square on the left side:
(x + 3.25)(x + 3.25) = 25.5625

Calculate the square root of the right side: 5.055937104

Break this problem into two subproblems by setting 
(x + 3.25) equal to 5.055937104 and -5.055937104.

Subproblem 1

x + 3.25 = 5.055937104 Simplifying x + 3.25 = 5.055937104 Reorder the terms: 3.25 + x = 5.055937104 Solving 3.25 + x = 5.055937104 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.25' to each side of the equation. 3.25 + -3.25 + x = 5.055937104 + -3.25 Combine like terms: 3.25 + -3.25 = 0.00 0.00 + x = 5.055937104 + -3.25 x = 5.055937104 + -3.25 Combine like terms: 5.055937104 + -3.25 = 1.805937104 x = 1.805937104 Simplifying x = 1.805937104

Subproblem 2

x + 3.25 = -5.055937104 Simplifying x + 3.25 = -5.055937104 Reorder the terms: 3.25 + x = -5.055937104 Solving 3.25 + x = -5.055937104 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.25' to each side of the equation. 3.25 + -3.25 + x = -5.055937104 + -3.25 Combine like terms: 3.25 + -3.25 = 0.00 0.00 + x = -5.055937104 + -3.25 x = -5.055937104 + -3.25 Combine like terms: -5.055937104 + -3.25 = -8.305937104 x = -8.305937104 Simplifying x = -8.305937104

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.805937104, -8.305937104}

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