(x-8)(x-10)=-1

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Solution for (x-8)(x-10)=-1 equation:


Simplifying
(x + -8)(x + -10) = -1

Reorder the terms:
(-8 + x)(x + -10) = -1

Reorder the terms:
(-8 + x)(-10 + x) = -1

Multiply (-8 + x) * (-10 + x)
(-8(-10 + x) + x(-10 + x)) = -1
((-10 * -8 + x * -8) + x(-10 + x)) = -1
((80 + -8x) + x(-10 + x)) = -1
(80 + -8x + (-10 * x + x * x)) = -1
(80 + -8x + (-10x + x2)) = -1

Combine like terms: -8x + -10x = -18x
(80 + -18x + x2) = -1

Solving
80 + -18x + x2 = -1

Solving for variable 'x'.

Reorder the terms:
80 + 1 + -18x + x2 = -1 + 1

Combine like terms: 80 + 1 = 81
81 + -18x + x2 = -1 + 1

Combine like terms: -1 + 1 = 0
81 + -18x + x2 = 0

Factor a trinomial.
(9 + -1x)(9 + -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 '(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 = {9, 9}

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