(9x^2-2x+24)+(3x^2+5x-87)=

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Solution for (9x^2-2x+24)+(3x^2+5x-87)= equation:


Simplifying
(9x2 + -2x + 24) + (3x2 + 5x + -87) = 0

Reorder the terms:
(24 + -2x + 9x2) + (3x2 + 5x + -87) = 0

Remove parenthesis around (24 + -2x + 9x2)
24 + -2x + 9x2 + (3x2 + 5x + -87) = 0

Reorder the terms:
24 + -2x + 9x2 + (-87 + 5x + 3x2) = 0

Remove parenthesis around (-87 + 5x + 3x2)
24 + -2x + 9x2 + -87 + 5x + 3x2 = 0

Reorder the terms:
24 + -87 + -2x + 5x + 9x2 + 3x2 = 0

Combine like terms: 24 + -87 = -63
-63 + -2x + 5x + 9x2 + 3x2 = 0

Combine like terms: -2x + 5x = 3x
-63 + 3x + 9x2 + 3x2 = 0

Combine like terms: 9x2 + 3x2 = 12x2
-63 + 3x + 12x2 = 0

Solving
-63 + 3x + 12x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-21 + x + 4x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-21 + x + 4x2)' equal to zero and attempt to solve: Simplifying -21 + x + 4x2 = 0 Solving -21 + x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -5.25 + 0.25x + x2 = 0 Move the constant term to the right: Add '5.25' to each side of the equation. -5.25 + 0.25x + 5.25 + x2 = 0 + 5.25 Reorder the terms: -5.25 + 5.25 + 0.25x + x2 = 0 + 5.25 Combine like terms: -5.25 + 5.25 = 0.00 0.00 + 0.25x + x2 = 0 + 5.25 0.25x + x2 = 0 + 5.25 Combine like terms: 0 + 5.25 = 5.25 0.25x + x2 = 5.25 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 0.25x + 0.25 + x2 = 5.25 + 0.25 Reorder the terms: 0.25 + 0.25x + x2 = 5.25 + 0.25 Combine like terms: 5.25 + 0.25 = 5.5 0.25 + 0.25x + x2 = 5.5 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 5.5 Calculate the square root of the right side: 2.34520788 Break this problem into two subproblems by setting (x + 0.5) equal to 2.34520788 and -2.34520788.

Subproblem 1

x + 0.5 = 2.34520788 Simplifying x + 0.5 = 2.34520788 Reorder the terms: 0.5 + x = 2.34520788 Solving 0.5 + x = 2.34520788 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 2.34520788 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 2.34520788 + -0.5 x = 2.34520788 + -0.5 Combine like terms: 2.34520788 + -0.5 = 1.84520788 x = 1.84520788 Simplifying x = 1.84520788

Subproblem 2

x + 0.5 = -2.34520788 Simplifying x + 0.5 = -2.34520788 Reorder the terms: 0.5 + x = -2.34520788 Solving 0.5 + x = -2.34520788 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -2.34520788 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -2.34520788 + -0.5 x = -2.34520788 + -0.5 Combine like terms: -2.34520788 + -0.5 = -2.84520788 x = -2.84520788 Simplifying x = -2.84520788

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.84520788, -2.84520788}

Solution

x = {1.84520788, -2.84520788}

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