3x^2+17x=24

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Solution for 3x^2+17x=24 equation:


Simplifying
3x2 + 17x = 24

Reorder the terms:
17x + 3x2 = 24

Solving
17x + 3x2 = 24

Solving for variable 'x'.

Reorder the terms:
-24 + 17x + 3x2 = 24 + -24

Combine like terms: 24 + -24 = 0
-24 + 17x + 3x2 = 0

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

Divide each side by '3'.
-8 + 5.666666667x + x2 = 0

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + 5.666666667x + 8 + x2 = 0 + 8

Reorder the terms:
-8 + 8 + 5.666666667x + x2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + 5.666666667x + x2 = 0 + 8
5.666666667x + x2 = 0 + 8

Combine like terms: 0 + 8 = 8
5.666666667x + x2 = 8

The x term is 5.666666667x.  Take half its coefficient (2.833333334).
Square it (8.027777782) and add it to both sides.

Add '8.027777782' to each side of the equation.
5.666666667x + 8.027777782 + x2 = 8 + 8.027777782

Reorder the terms:
8.027777782 + 5.666666667x + x2 = 8 + 8.027777782

Combine like terms: 8 + 8.027777782 = 16.027777782
8.027777782 + 5.666666667x + x2 = 16.027777782

Factor a perfect square on the left side:
(x + 2.833333334)(x + 2.833333334) = 16.027777782

Calculate the square root of the right side: 4.003470717

Break this problem into two subproblems by setting 
(x + 2.833333334) equal to 4.003470717 and -4.003470717.

Subproblem 1

x + 2.833333334 = 4.003470717 Simplifying x + 2.833333334 = 4.003470717 Reorder the terms: 2.833333334 + x = 4.003470717 Solving 2.833333334 + x = 4.003470717 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.833333334' to each side of the equation. 2.833333334 + -2.833333334 + x = 4.003470717 + -2.833333334 Combine like terms: 2.833333334 + -2.833333334 = 0.000000000 0.000000000 + x = 4.003470717 + -2.833333334 x = 4.003470717 + -2.833333334 Combine like terms: 4.003470717 + -2.833333334 = 1.170137383 x = 1.170137383 Simplifying x = 1.170137383

Subproblem 2

x + 2.833333334 = -4.003470717 Simplifying x + 2.833333334 = -4.003470717 Reorder the terms: 2.833333334 + x = -4.003470717 Solving 2.833333334 + x = -4.003470717 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.833333334' to each side of the equation. 2.833333334 + -2.833333334 + x = -4.003470717 + -2.833333334 Combine like terms: 2.833333334 + -2.833333334 = 0.000000000 0.000000000 + x = -4.003470717 + -2.833333334 x = -4.003470717 + -2.833333334 Combine like terms: -4.003470717 + -2.833333334 = -6.836804051 x = -6.836804051 Simplifying x = -6.836804051

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.170137383, -6.836804051}

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