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Simplifying 81 + -1(x + 5)(x + 5) = 0 Reorder the terms: 81 + -1(5 + x)(x + 5) = 0 Reorder the terms: 81 + -1(5 + x)(5 + x) = 0 Multiply (5 + x) * (5 + x) 81 + -1(5(5 + x) + x(5 + x)) = 0 81 + -1((5 * 5 + x * 5) + x(5 + x)) = 0 81 + -1((25 + 5x) + x(5 + x)) = 0 81 + -1(25 + 5x + (5 * x + x * x)) = 0 81 + -1(25 + 5x + (5x + x2)) = 0 Combine like terms: 5x + 5x = 10x 81 + -1(25 + 10x + x2) = 0 81 + (25 * -1 + 10x * -1 + x2 * -1) = 0 81 + (-25 + -10x + -1x2) = 0 Combine like terms: 81 + -25 = 56 56 + -10x + -1x2 = 0 Solving 56 + -10x + -1x2 = 0 Solving for variable 'x'. Factor a trinomial. (4 + -1x)(14 + x) = 0Subproblem 1
Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 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 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4Subproblem 2
Set the factor '(14 + x)' equal to zero and attempt to solve: Simplifying 14 + x = 0 Solving 14 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + x = 0 + -14 Combine like terms: 14 + -14 = 0 0 + x = 0 + -14 x = 0 + -14 Combine like terms: 0 + -14 = -14 x = -14 Simplifying x = -14Solution
x = {4, -14}
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