(x-3)(x+7)=24

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Solution for (x-3)(x+7)=24 equation:


Simplifying
(x + -3)(x + 7) = 24

Reorder the terms:
(-3 + x)(x + 7) = 24

Reorder the terms:
(-3 + x)(7 + x) = 24

Multiply (-3 + x) * (7 + x)
(-3(7 + x) + x(7 + x)) = 24
((7 * -3 + x * -3) + x(7 + x)) = 24
((-21 + -3x) + x(7 + x)) = 24
(-21 + -3x + (7 * x + x * x)) = 24
(-21 + -3x + (7x + x2)) = 24

Combine like terms: -3x + 7x = 4x
(-21 + 4x + x2) = 24

Solving
-21 + 4x + x2 = 24

Solving for variable 'x'.

Reorder the terms:
-21 + -24 + 4x + x2 = 24 + -24

Combine like terms: -21 + -24 = -45
-45 + 4x + x2 = 24 + -24

Combine like terms: 24 + -24 = 0
-45 + 4x + x2 = 0

Factor a trinomial.
(-9 + -1x)(5 + -1x) = 0

Subproblem 1

Set the factor '(-9 + -1x)' equal to zero and attempt to solve: Simplifying -9 + -1x = 0 Solving -9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -1x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1x = 0 + 9 -1x = 0 + 9 Combine like terms: 0 + 9 = 9 -1x = 9 Divide each side by '-1'. x = -9 Simplifying x = -9

Subproblem 2

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Solution

x = {-9, 5}

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