0.3x+24*5x*0.2x-15=

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Solution for 0.3x+24*5x*0.2x-15= equation:


Simplifying
0.3x + 24 * 5x * 0.2x + -15 = 0

Reorder the terms for easier multiplication:
0.3x + 24 * 5 * 0.2x * x + -15 = 0

Multiply 24 * 5
0.3x + 120 * 0.2x * x + -15 = 0

Multiply 120 * 0.2
0.3x + 24x * x + -15 = 0

Multiply x * x
0.3x + 24x2 + -15 = 0

Reorder the terms:
-15 + 0.3x + 24x2 = 0

Solving
-15 + 0.3x + 24x2 = 0

Solving for variable 'x'.

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

Divide each side by '24'.
-0.625 + 0.0125x + x2 = 0

Move the constant term to the right:

Add '0.625' to each side of the equation.
-0.625 + 0.0125x + 0.625 + x2 = 0 + 0.625

Reorder the terms:
-0.625 + 0.625 + 0.0125x + x2 = 0 + 0.625

Combine like terms: -0.625 + 0.625 = 0.000
0.000 + 0.0125x + x2 = 0 + 0.625
0.0125x + x2 = 0 + 0.625

Combine like terms: 0 + 0.625 = 0.625
0.0125x + x2 = 0.625

The x term is 0.0125x.  Take half its coefficient (0.00625).
Square it (0.0000390625) and add it to both sides.

Add '0.0000390625' to each side of the equation.
0.0125x + 0.0000390625 + x2 = 0.625 + 0.0000390625

Reorder the terms:
0.0000390625 + 0.0125x + x2 = 0.625 + 0.0000390625

Combine like terms: 0.625 + 0.0000390625 = 0.6250390625
0.0000390625 + 0.0125x + x2 = 0.6250390625

Factor a perfect square on the left side:
(x + 0.00625)(x + 0.00625) = 0.6250390625

Calculate the square root of the right side: 0.79059412

Break this problem into two subproblems by setting 
(x + 0.00625) equal to 0.79059412 and -0.79059412.

Subproblem 1

x + 0.00625 = 0.79059412 Simplifying x + 0.00625 = 0.79059412 Reorder the terms: 0.00625 + x = 0.79059412 Solving 0.00625 + x = 0.79059412 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.00625' to each side of the equation. 0.00625 + -0.00625 + x = 0.79059412 + -0.00625 Combine like terms: 0.00625 + -0.00625 = 0.00000 0.00000 + x = 0.79059412 + -0.00625 x = 0.79059412 + -0.00625 Combine like terms: 0.79059412 + -0.00625 = 0.78434412 x = 0.78434412 Simplifying x = 0.78434412

Subproblem 2

x + 0.00625 = -0.79059412 Simplifying x + 0.00625 = -0.79059412 Reorder the terms: 0.00625 + x = -0.79059412 Solving 0.00625 + x = -0.79059412 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.00625' to each side of the equation. 0.00625 + -0.00625 + x = -0.79059412 + -0.00625 Combine like terms: 0.00625 + -0.00625 = 0.00000 0.00000 + x = -0.79059412 + -0.00625 x = -0.79059412 + -0.00625 Combine like terms: -0.79059412 + -0.00625 = -0.79684412 x = -0.79684412 Simplifying x = -0.79684412

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.78434412, -0.79684412}

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