8x^2+23x=298

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Solution for 8x^2+23x=298 equation:


Simplifying
8x2 + 23x = 298

Reorder the terms:
23x + 8x2 = 298

Solving
23x + 8x2 = 298

Solving for variable 'x'.

Reorder the terms:
-298 + 23x + 8x2 = 298 + -298

Combine like terms: 298 + -298 = 0
-298 + 23x + 8x2 = 0

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

Divide each side by '8'.
-37.25 + 2.875x + x2 = 0

Move the constant term to the right:

Add '37.25' to each side of the equation.
-37.25 + 2.875x + 37.25 + x2 = 0 + 37.25

Reorder the terms:
-37.25 + 37.25 + 2.875x + x2 = 0 + 37.25

Combine like terms: -37.25 + 37.25 = 0.00
0.00 + 2.875x + x2 = 0 + 37.25
2.875x + x2 = 0 + 37.25

Combine like terms: 0 + 37.25 = 37.25
2.875x + x2 = 37.25

The x term is 2.875x.  Take half its coefficient (1.4375).
Square it (2.06640625) and add it to both sides.

Add '2.06640625' to each side of the equation.
2.875x + 2.06640625 + x2 = 37.25 + 2.06640625

Reorder the terms:
2.06640625 + 2.875x + x2 = 37.25 + 2.06640625

Combine like terms: 37.25 + 2.06640625 = 39.31640625
2.06640625 + 2.875x + x2 = 39.31640625

Factor a perfect square on the left side:
(x + 1.4375)(x + 1.4375) = 39.31640625

Calculate the square root of the right side: 6.270279599

Break this problem into two subproblems by setting 
(x + 1.4375) equal to 6.270279599 and -6.270279599.

Subproblem 1

x + 1.4375 = 6.270279599 Simplifying x + 1.4375 = 6.270279599 Reorder the terms: 1.4375 + x = 6.270279599 Solving 1.4375 + x = 6.270279599 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.4375' to each side of the equation. 1.4375 + -1.4375 + x = 6.270279599 + -1.4375 Combine like terms: 1.4375 + -1.4375 = 0.0000 0.0000 + x = 6.270279599 + -1.4375 x = 6.270279599 + -1.4375 Combine like terms: 6.270279599 + -1.4375 = 4.832779599 x = 4.832779599 Simplifying x = 4.832779599

Subproblem 2

x + 1.4375 = -6.270279599 Simplifying x + 1.4375 = -6.270279599 Reorder the terms: 1.4375 + x = -6.270279599 Solving 1.4375 + x = -6.270279599 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.4375' to each side of the equation. 1.4375 + -1.4375 + x = -6.270279599 + -1.4375 Combine like terms: 1.4375 + -1.4375 = 0.0000 0.0000 + x = -6.270279599 + -1.4375 x = -6.270279599 + -1.4375 Combine like terms: -6.270279599 + -1.4375 = -7.707779599 x = -7.707779599 Simplifying x = -7.707779599

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.832779599, -7.707779599}

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