(x+6)(2x-5)+(x+6)(x+9)=0

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Solution for (x+6)(2x-5)+(x+6)(x+9)=0 equation:


Simplifying
(x + 6)(2x + -5) + (x + 6)(x + 9) = 0

Reorder the terms:
(6 + x)(2x + -5) + (x + 6)(x + 9) = 0

Reorder the terms:
(6 + x)(-5 + 2x) + (x + 6)(x + 9) = 0

Multiply (6 + x) * (-5 + 2x)
(6(-5 + 2x) + x(-5 + 2x)) + (x + 6)(x + 9) = 0
((-5 * 6 + 2x * 6) + x(-5 + 2x)) + (x + 6)(x + 9) = 0
((-30 + 12x) + x(-5 + 2x)) + (x + 6)(x + 9) = 0
(-30 + 12x + (-5 * x + 2x * x)) + (x + 6)(x + 9) = 0
(-30 + 12x + (-5x + 2x2)) + (x + 6)(x + 9) = 0

Combine like terms: 12x + -5x = 7x
(-30 + 7x + 2x2) + (x + 6)(x + 9) = 0

Reorder the terms:
-30 + 7x + 2x2 + (6 + x)(x + 9) = 0

Reorder the terms:
-30 + 7x + 2x2 + (6 + x)(9 + x) = 0

Multiply (6 + x) * (9 + x)
-30 + 7x + 2x2 + (6(9 + x) + x(9 + x)) = 0
-30 + 7x + 2x2 + ((9 * 6 + x * 6) + x(9 + x)) = 0
-30 + 7x + 2x2 + ((54 + 6x) + x(9 + x)) = 0
-30 + 7x + 2x2 + (54 + 6x + (9 * x + x * x)) = 0
-30 + 7x + 2x2 + (54 + 6x + (9x + x2)) = 0

Combine like terms: 6x + 9x = 15x
-30 + 7x + 2x2 + (54 + 15x + x2) = 0

Reorder the terms:
-30 + 54 + 7x + 15x + 2x2 + x2 = 0

Combine like terms: -30 + 54 = 24
24 + 7x + 15x + 2x2 + x2 = 0

Combine like terms: 7x + 15x = 22x
24 + 22x + 2x2 + x2 = 0

Combine like terms: 2x2 + x2 = 3x2
24 + 22x + 3x2 = 0

Solving
24 + 22x + 3x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(6 + x)(4 + 3x) = 0

Subproblem 1

Set the factor '(6 + x)' equal to zero and attempt to solve: Simplifying 6 + x = 0 Solving 6 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + x = 0 + -6 x = 0 + -6 Combine like terms: 0 + -6 = -6 x = -6 Simplifying x = -6

Subproblem 2

Set the factor '(4 + 3x)' equal to zero and attempt to solve: Simplifying 4 + 3x = 0 Solving 4 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 3x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 3x = 0 + -4 3x = 0 + -4 Combine like terms: 0 + -4 = -4 3x = -4 Divide each side by '3'. x = -1.333333333 Simplifying x = -1.333333333

Solution

x = {-6, -1.333333333}

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