(x-6)(x+4)=39

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Solution for (x-6)(x+4)=39 equation:


Simplifying
(x + -6)(x + 4) = 39

Reorder the terms:
(-6 + x)(x + 4) = 39

Reorder the terms:
(-6 + x)(4 + x) = 39

Multiply (-6 + x) * (4 + x)
(-6(4 + x) + x(4 + x)) = 39
((4 * -6 + x * -6) + x(4 + x)) = 39
((-24 + -6x) + x(4 + x)) = 39
(-24 + -6x + (4 * x + x * x)) = 39
(-24 + -6x + (4x + x2)) = 39

Combine like terms: -6x + 4x = -2x
(-24 + -2x + x2) = 39

Solving
-24 + -2x + x2 = 39

Solving for variable 'x'.

Reorder the terms:
-24 + -39 + -2x + x2 = 39 + -39

Combine like terms: -24 + -39 = -63
-63 + -2x + x2 = 39 + -39

Combine like terms: 39 + -39 = 0
-63 + -2x + x2 = 0

Factor a trinomial.
(-7 + -1x)(9 + -1x) = 0

Subproblem 1

Set the factor '(-7 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7

Subproblem 2

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

Solution

x = {-7, 9}

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