15x^2+30x+5=

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Solution for 15x^2+30x+5= equation:


Simplifying
15x2 + 30x + 5 = 0

Reorder the terms:
5 + 30x + 15x2 = 0

Solving
5 + 30x + 15x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '5'.
5(1 + 6x + 3x2) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(1 + 6x + 3x2)' equal to zero and attempt to solve: Simplifying 1 + 6x + 3x2 = 0 Solving 1 + 6x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 0.3333333333 + 2x + x2 = 0 Move the constant term to the right: Add '-0.3333333333' to each side of the equation. 0.3333333333 + 2x + -0.3333333333 + x2 = 0 + -0.3333333333 Reorder the terms: 0.3333333333 + -0.3333333333 + 2x + x2 = 0 + -0.3333333333 Combine like terms: 0.3333333333 + -0.3333333333 = 0.0000000000 0.0000000000 + 2x + x2 = 0 + -0.3333333333 2x + x2 = 0 + -0.3333333333 Combine like terms: 0 + -0.3333333333 = -0.3333333333 2x + x2 = -0.3333333333 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = -0.3333333333 + 1 Reorder the terms: 1 + 2x + x2 = -0.3333333333 + 1 Combine like terms: -0.3333333333 + 1 = 0.6666666667 1 + 2x + x2 = 0.6666666667 Factor a perfect square on the left side: (x + 1)(x + 1) = 0.6666666667 Calculate the square root of the right side: 0.816496581 Break this problem into two subproblems by setting (x + 1) equal to 0.816496581 and -0.816496581.

Subproblem 1

x + 1 = 0.816496581 Simplifying x + 1 = 0.816496581 Reorder the terms: 1 + x = 0.816496581 Solving 1 + x = 0.816496581 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 0.816496581 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0.816496581 + -1 x = 0.816496581 + -1 Combine like terms: 0.816496581 + -1 = -0.183503419 x = -0.183503419 Simplifying x = -0.183503419

Subproblem 2

x + 1 = -0.816496581 Simplifying x + 1 = -0.816496581 Reorder the terms: 1 + x = -0.816496581 Solving 1 + x = -0.816496581 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -0.816496581 + -1 Combine like terms: 1 + -1 = 0 0 + x = -0.816496581 + -1 x = -0.816496581 + -1 Combine like terms: -0.816496581 + -1 = -1.816496581 x = -1.816496581 Simplifying x = -1.816496581

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.183503419, -1.816496581}

Solution

x = {-0.183503419, -1.816496581}

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