(5-x)(9+x)=49

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Solution for (5-x)(9+x)=49 equation:


Simplifying
(5 + -1x)(9 + x) = 49

Multiply (5 + -1x) * (9 + x)
(5(9 + x) + -1x * (9 + x)) = 49
((9 * 5 + x * 5) + -1x * (9 + x)) = 49
((45 + 5x) + -1x * (9 + x)) = 49
(45 + 5x + (9 * -1x + x * -1x)) = 49
(45 + 5x + (-9x + -1x2)) = 49

Combine like terms: 5x + -9x = -4x
(45 + -4x + -1x2) = 49

Solving
45 + -4x + -1x2 = 49

Solving for variable 'x'.

Reorder the terms:
45 + -49 + -4x + -1x2 = 49 + -49

Combine like terms: 45 + -49 = -4
-4 + -4x + -1x2 = 49 + -49

Combine like terms: 49 + -49 = 0
-4 + -4x + -1x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(4 + 4x + x2) = 0

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

Ignore the factor -1.

Subproblem 1

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

Subproblem 2

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

Solution

x = {-2, -2}

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