2x+5=5x^2-37

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Solution for 2x+5=5x^2-37 equation:


Simplifying
2x + 5 = 5x2 + -37

Reorder the terms:
5 + 2x = 5x2 + -37

Reorder the terms:
5 + 2x = -37 + 5x2

Solving
5 + 2x = -37 + 5x2

Solving for variable 'x'.

Reorder the terms:
5 + 37 + 2x + -5x2 = -37 + 5x2 + 37 + -5x2

Combine like terms: 5 + 37 = 42
42 + 2x + -5x2 = -37 + 5x2 + 37 + -5x2

Reorder the terms:
42 + 2x + -5x2 = -37 + 37 + 5x2 + -5x2

Combine like terms: -37 + 37 = 0
42 + 2x + -5x2 = 0 + 5x2 + -5x2
42 + 2x + -5x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
42 + 2x + -5x2 = 0

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
-8.4 + -0.4x + x2 = 0

Move the constant term to the right:

Add '8.4' to each side of the equation.
-8.4 + -0.4x + 8.4 + x2 = 0 + 8.4

Reorder the terms:
-8.4 + 8.4 + -0.4x + x2 = 0 + 8.4

Combine like terms: -8.4 + 8.4 = 0.0
0.0 + -0.4x + x2 = 0 + 8.4
-0.4x + x2 = 0 + 8.4

Combine like terms: 0 + 8.4 = 8.4
-0.4x + x2 = 8.4

The x term is -0.4x.  Take half its coefficient (-0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
-0.4x + 0.04 + x2 = 8.4 + 0.04

Reorder the terms:
0.04 + -0.4x + x2 = 8.4 + 0.04

Combine like terms: 8.4 + 0.04 = 8.44
0.04 + -0.4x + x2 = 8.44

Factor a perfect square on the left side:
(x + -0.2)(x + -0.2) = 8.44

Calculate the square root of the right side: 2.905167809

Break this problem into two subproblems by setting 
(x + -0.2) equal to 2.905167809 and -2.905167809.

Subproblem 1

x + -0.2 = 2.905167809 Simplifying x + -0.2 = 2.905167809 Reorder the terms: -0.2 + x = 2.905167809 Solving -0.2 + x = 2.905167809 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + x = 2.905167809 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + x = 2.905167809 + 0.2 x = 2.905167809 + 0.2 Combine like terms: 2.905167809 + 0.2 = 3.105167809 x = 3.105167809 Simplifying x = 3.105167809

Subproblem 2

x + -0.2 = -2.905167809 Simplifying x + -0.2 = -2.905167809 Reorder the terms: -0.2 + x = -2.905167809 Solving -0.2 + x = -2.905167809 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + x = -2.905167809 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + x = -2.905167809 + 0.2 x = -2.905167809 + 0.2 Combine like terms: -2.905167809 + 0.2 = -2.705167809 x = -2.705167809 Simplifying x = -2.705167809

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.105167809, -2.705167809}

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