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

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


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

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

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

Multiply (-4 + x) * (-7 + x)
(-4(-7 + x) + x(-7 + x)) = 0
((-7 * -4 + x * -4) + x(-7 + x)) = 0
((28 + -4x) + x(-7 + x)) = 0
(28 + -4x + (-7 * x + x * x)) = 0
(28 + -4x + (-7x + x2)) = 0

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

Solving
28 + -11x + x2 = 0

Solving for variable 'x'.

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

Subproblem 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 = 4

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 = {4, 7}

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