0=3x^2-42x-150

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Solution for 0=3x^2-42x-150 equation:


Simplifying
0 = 3x2 + -42x + -150

Reorder the terms:
0 = -150 + -42x + 3x2

Solving
0 = -150 + -42x + 3x2

Solving for variable 'x'.

Combine like terms: 0 + 150 = 150
150 + 42x + -3x2 = -150 + -42x + 3x2 + 150 + 42x + -3x2

Reorder the terms:
150 + 42x + -3x2 = -150 + 150 + -42x + 42x + 3x2 + -3x2

Combine like terms: -150 + 150 = 0
150 + 42x + -3x2 = 0 + -42x + 42x + 3x2 + -3x2
150 + 42x + -3x2 = -42x + 42x + 3x2 + -3x2

Combine like terms: -42x + 42x = 0
150 + 42x + -3x2 = 0 + 3x2 + -3x2
150 + 42x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
150 + 42x + -3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(50 + 14x + -1x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(50 + 14x + -1x2)' equal to zero and attempt to solve: Simplifying 50 + 14x + -1x2 = 0 Solving 50 + 14x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -50 + -14x + x2 = 0 Move the constant term to the right: Add '50' to each side of the equation. -50 + -14x + 50 + x2 = 0 + 50 Reorder the terms: -50 + 50 + -14x + x2 = 0 + 50 Combine like terms: -50 + 50 = 0 0 + -14x + x2 = 0 + 50 -14x + x2 = 0 + 50 Combine like terms: 0 + 50 = 50 -14x + x2 = 50 The x term is -14x. Take half its coefficient (-7). Square it (49) and add it to both sides. Add '49' to each side of the equation. -14x + 49 + x2 = 50 + 49 Reorder the terms: 49 + -14x + x2 = 50 + 49 Combine like terms: 50 + 49 = 99 49 + -14x + x2 = 99 Factor a perfect square on the left side: (x + -7)(x + -7) = 99 Calculate the square root of the right side: 9.949874371 Break this problem into two subproblems by setting (x + -7) equal to 9.949874371 and -9.949874371.

Subproblem 1

x + -7 = 9.949874371 Simplifying x + -7 = 9.949874371 Reorder the terms: -7 + x = 9.949874371 Solving -7 + x = 9.949874371 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 9.949874371 + 7 Combine like terms: -7 + 7 = 0 0 + x = 9.949874371 + 7 x = 9.949874371 + 7 Combine like terms: 9.949874371 + 7 = 16.949874371 x = 16.949874371 Simplifying x = 16.949874371

Subproblem 2

x + -7 = -9.949874371 Simplifying x + -7 = -9.949874371 Reorder the terms: -7 + x = -9.949874371 Solving -7 + x = -9.949874371 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -9.949874371 + 7 Combine like terms: -7 + 7 = 0 0 + x = -9.949874371 + 7 x = -9.949874371 + 7 Combine like terms: -9.949874371 + 7 = -2.949874371 x = -2.949874371 Simplifying x = -2.949874371

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.949874371, -2.949874371}

Solution

x = {16.949874371, -2.949874371}

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