375x^2-15x-2=0

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Solution for 375x^2-15x-2=0 equation:


Simplifying
375x2 + -15x + -2 = 0

Reorder the terms:
-2 + -15x + 375x2 = 0

Solving
-2 + -15x + 375x2 = 0

Solving for variable 'x'.

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

Divide each side by '375'.
-0.005333333333 + -0.04x + x2 = 0

Move the constant term to the right:

Add '0.005333333333' to each side of the equation.
-0.005333333333 + -0.04x + 0.005333333333 + x2 = 0 + 0.005333333333

Reorder the terms:
-0.005333333333 + 0.005333333333 + -0.04x + x2 = 0 + 0.005333333333

Combine like terms: -0.005333333333 + 0.005333333333 = 0.000000000000
0.000000000000 + -0.04x + x2 = 0 + 0.005333333333
-0.04x + x2 = 0 + 0.005333333333

Combine like terms: 0 + 0.005333333333 = 0.005333333333
-0.04x + x2 = 0.005333333333

The x term is -0.04x.  Take half its coefficient (-0.02).
Square it (0.0004) and add it to both sides.

Add '0.0004' to each side of the equation.
-0.04x + 0.0004 + x2 = 0.005333333333 + 0.0004

Reorder the terms:
0.0004 + -0.04x + x2 = 0.005333333333 + 0.0004

Combine like terms: 0.005333333333 + 0.0004 = 0.005733333333
0.0004 + -0.04x + x2 = 0.005733333333

Factor a perfect square on the left side:
(x + -0.02)(x + -0.02) = 0.005733333333

Calculate the square root of the right side: 0.075718778

Break this problem into two subproblems by setting 
(x + -0.02) equal to 0.075718778 and -0.075718778.

Subproblem 1

x + -0.02 = 0.075718778 Simplifying x + -0.02 = 0.075718778 Reorder the terms: -0.02 + x = 0.075718778 Solving -0.02 + x = 0.075718778 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.02' to each side of the equation. -0.02 + 0.02 + x = 0.075718778 + 0.02 Combine like terms: -0.02 + 0.02 = 0.00 0.00 + x = 0.075718778 + 0.02 x = 0.075718778 + 0.02 Combine like terms: 0.075718778 + 0.02 = 0.095718778 x = 0.095718778 Simplifying x = 0.095718778

Subproblem 2

x + -0.02 = -0.075718778 Simplifying x + -0.02 = -0.075718778 Reorder the terms: -0.02 + x = -0.075718778 Solving -0.02 + x = -0.075718778 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.02' to each side of the equation. -0.02 + 0.02 + x = -0.075718778 + 0.02 Combine like terms: -0.02 + 0.02 = 0.00 0.00 + x = -0.075718778 + 0.02 x = -0.075718778 + 0.02 Combine like terms: -0.075718778 + 0.02 = -0.055718778 x = -0.055718778 Simplifying x = -0.055718778

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.095718778, -0.055718778}

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