(5-x)(3-x)-8=0

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Solution for (5-x)(3-x)-8=0 equation:


Simplifying
(5 + -1x)(3 + -1x) + -8 = 0

Multiply (5 + -1x) * (3 + -1x)
(5(3 + -1x) + -1x * (3 + -1x)) + -8 = 0
((3 * 5 + -1x * 5) + -1x * (3 + -1x)) + -8 = 0
((15 + -5x) + -1x * (3 + -1x)) + -8 = 0
(15 + -5x + (3 * -1x + -1x * -1x)) + -8 = 0
(15 + -5x + (-3x + 1x2)) + -8 = 0

Combine like terms: -5x + -3x = -8x
(15 + -8x + 1x2) + -8 = 0

Reorder the terms:
15 + -8 + -8x + 1x2 = 0

Combine like terms: 15 + -8 = 7
7 + -8x + 1x2 = 0

Solving
7 + -8x + 1x2 = 0

Solving for variable 'x'.

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

Subproblem 1

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

Subproblem 2

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

Solution

x = {1, 7}

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