(x-3)(x+3)+(x-3)(x+8)=

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Solution for (x-3)(x+3)+(x-3)(x+8)= equation:


Simplifying
(x + -3)(x + 3) + (x + -3)(x + 8) = 0

Reorder the terms:
(-3 + x)(x + 3) + (x + -3)(x + 8) = 0

Reorder the terms:
(-3 + x)(3 + x) + (x + -3)(x + 8) = 0

Multiply (-3 + x) * (3 + x)
(-3(3 + x) + x(3 + x)) + (x + -3)(x + 8) = 0
((3 * -3 + x * -3) + x(3 + x)) + (x + -3)(x + 8) = 0
((-9 + -3x) + x(3 + x)) + (x + -3)(x + 8) = 0
(-9 + -3x + (3 * x + x * x)) + (x + -3)(x + 8) = 0
(-9 + -3x + (3x + x2)) + (x + -3)(x + 8) = 0

Combine like terms: -3x + 3x = 0
(-9 + 0 + x2) + (x + -3)(x + 8) = 0
(-9 + x2) + (x + -3)(x + 8) = 0

Reorder the terms:
-9 + x2 + (-3 + x)(x + 8) = 0

Reorder the terms:
-9 + x2 + (-3 + x)(8 + x) = 0

Multiply (-3 + x) * (8 + x)
-9 + x2 + (-3(8 + x) + x(8 + x)) = 0
-9 + x2 + ((8 * -3 + x * -3) + x(8 + x)) = 0
-9 + x2 + ((-24 + -3x) + x(8 + x)) = 0
-9 + x2 + (-24 + -3x + (8 * x + x * x)) = 0
-9 + x2 + (-24 + -3x + (8x + x2)) = 0

Combine like terms: -3x + 8x = 5x
-9 + x2 + (-24 + 5x + x2) = 0

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

Combine like terms: -9 + -24 = -33
-33 + 5x + x2 + x2 = 0

Combine like terms: x2 + x2 = 2x2
-33 + 5x + 2x2 = 0

Solving
-33 + 5x + 2x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-11 + -2x)(3 + -1x) = 0

Subproblem 1

Set the factor '(-11 + -2x)' equal to zero and attempt to solve: Simplifying -11 + -2x = 0 Solving -11 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + -2x = 0 + 11 Combine like terms: -11 + 11 = 0 0 + -2x = 0 + 11 -2x = 0 + 11 Combine like terms: 0 + 11 = 11 -2x = 11 Divide each side by '-2'. x = -5.5 Simplifying x = -5.5

Subproblem 2

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-5.5, 3}

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