15x^2-149x=-5

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Solution for 15x^2-149x=-5 equation:


Simplifying
15x2 + -149x = -5

Reorder the terms:
-149x + 15x2 = -5

Solving
-149x + 15x2 = -5

Solving for variable 'x'.

Reorder the terms:
5 + -149x + 15x2 = -5 + 5

Combine like terms: -5 + 5 = 0
5 + -149x + 15x2 = 0

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

Divide each side by '15'.
0.3333333333 + -9.933333333x + x2 = 0

Move the constant term to the right:

Add '-0.3333333333' to each side of the equation.
0.3333333333 + -9.933333333x + -0.3333333333 + x2 = 0 + -0.3333333333

Reorder the terms:
0.3333333333 + -0.3333333333 + -9.933333333x + x2 = 0 + -0.3333333333

Combine like terms: 0.3333333333 + -0.3333333333 = 0.0000000000
0.0000000000 + -9.933333333x + x2 = 0 + -0.3333333333
-9.933333333x + x2 = 0 + -0.3333333333

Combine like terms: 0 + -0.3333333333 = -0.3333333333
-9.933333333x + x2 = -0.3333333333

The x term is -9.933333333x.  Take half its coefficient (-4.966666667).
Square it (24.66777778) and add it to both sides.

Add '24.66777778' to each side of the equation.
-9.933333333x + 24.66777778 + x2 = -0.3333333333 + 24.66777778

Reorder the terms:
24.66777778 + -9.933333333x + x2 = -0.3333333333 + 24.66777778

Combine like terms: -0.3333333333 + 24.66777778 = 24.3344444467
24.66777778 + -9.933333333x + x2 = 24.3344444467

Factor a perfect square on the left side:
(x + -4.966666667)(x + -4.966666667) = 24.3344444467

Calculate the square root of the right side: 4.932995484

Break this problem into two subproblems by setting 
(x + -4.966666667) equal to 4.932995484 and -4.932995484.

Subproblem 1

x + -4.966666667 = 4.932995484 Simplifying x + -4.966666667 = 4.932995484 Reorder the terms: -4.966666667 + x = 4.932995484 Solving -4.966666667 + x = 4.932995484 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.966666667' to each side of the equation. -4.966666667 + 4.966666667 + x = 4.932995484 + 4.966666667 Combine like terms: -4.966666667 + 4.966666667 = 0.000000000 0.000000000 + x = 4.932995484 + 4.966666667 x = 4.932995484 + 4.966666667 Combine like terms: 4.932995484 + 4.966666667 = 9.899662151 x = 9.899662151 Simplifying x = 9.899662151

Subproblem 2

x + -4.966666667 = -4.932995484 Simplifying x + -4.966666667 = -4.932995484 Reorder the terms: -4.966666667 + x = -4.932995484 Solving -4.966666667 + x = -4.932995484 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.966666667' to each side of the equation. -4.966666667 + 4.966666667 + x = -4.932995484 + 4.966666667 Combine like terms: -4.966666667 + 4.966666667 = 0.000000000 0.000000000 + x = -4.932995484 + 4.966666667 x = -4.932995484 + 4.966666667 Combine like terms: -4.932995484 + 4.966666667 = 0.033671183 x = 0.033671183 Simplifying x = 0.033671183

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.899662151, 0.033671183}

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