2x^2-19x=154

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Solution for 2x^2-19x=154 equation:


Simplifying
2x2 + -19x = 154

Reorder the terms:
-19x + 2x2 = 154

Solving
-19x + 2x2 = 154

Solving for variable 'x'.

Reorder the terms:
-154 + -19x + 2x2 = 154 + -154

Combine like terms: 154 + -154 = 0
-154 + -19x + 2x2 = 0

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

Divide each side by '2'.
-77 + -9.5x + x2 = 0

Move the constant term to the right:

Add '77' to each side of the equation.
-77 + -9.5x + 77 + x2 = 0 + 77

Reorder the terms:
-77 + 77 + -9.5x + x2 = 0 + 77

Combine like terms: -77 + 77 = 0
0 + -9.5x + x2 = 0 + 77
-9.5x + x2 = 0 + 77

Combine like terms: 0 + 77 = 77
-9.5x + x2 = 77

The x term is -9.5x.  Take half its coefficient (-4.75).
Square it (22.5625) and add it to both sides.

Add '22.5625' to each side of the equation.
-9.5x + 22.5625 + x2 = 77 + 22.5625

Reorder the terms:
22.5625 + -9.5x + x2 = 77 + 22.5625

Combine like terms: 77 + 22.5625 = 99.5625
22.5625 + -9.5x + x2 = 99.5625

Factor a perfect square on the left side:
(x + -4.75)(x + -4.75) = 99.5625

Calculate the square root of the right side: 9.978101022

Break this problem into two subproblems by setting 
(x + -4.75) equal to 9.978101022 and -9.978101022.

Subproblem 1

x + -4.75 = 9.978101022 Simplifying x + -4.75 = 9.978101022 Reorder the terms: -4.75 + x = 9.978101022 Solving -4.75 + x = 9.978101022 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + x = 9.978101022 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + x = 9.978101022 + 4.75 x = 9.978101022 + 4.75 Combine like terms: 9.978101022 + 4.75 = 14.728101022 x = 14.728101022 Simplifying x = 14.728101022

Subproblem 2

x + -4.75 = -9.978101022 Simplifying x + -4.75 = -9.978101022 Reorder the terms: -4.75 + x = -9.978101022 Solving -4.75 + x = -9.978101022 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + x = -9.978101022 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + x = -9.978101022 + 4.75 x = -9.978101022 + 4.75 Combine like terms: -9.978101022 + 4.75 = -5.228101022 x = -5.228101022 Simplifying x = -5.228101022

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.728101022, -5.228101022}

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