(x-7)4-x(x-7)=0

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Solution for (x-7)4-x(x-7)=0 equation:


Simplifying
(x + -7) * 4 + -1x(x + -7) = 0

Reorder the terms:
(-7 + x) * 4 + -1x(x + -7) = 0

Reorder the terms for easier multiplication:
4(-7 + x) + -1x(x + -7) = 0
(-7 * 4 + x * 4) + -1x(x + -7) = 0
(-28 + 4x) + -1x(x + -7) = 0

Reorder the terms:
-28 + 4x + -1x(-7 + x) = 0
-28 + 4x + (-7 * -1x + x * -1x) = 0
-28 + 4x + (7x + -1x2) = 0

Combine like terms: 4x + 7x = 11x
-28 + 11x + -1x2 = 0

Solving
-28 + 11x + -1x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-7 + x)(4 + -1x) = 0

Subproblem 1

Set the factor '(-7 + x)' equal to zero and attempt to solve: Simplifying -7 + x = 0 Solving -7 + x = 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 + x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + x = 0 + 7 x = 0 + 7 Combine like terms: 0 + 7 = 7 x = 7 Simplifying x = 7

Subproblem 2

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 = 4

Solution

x = {7, 4}

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