x^2-84=25x

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Solution for x^2-84=25x equation:


Simplifying
x2 + -84 = 25x

Reorder the terms:
-84 + x2 = 25x

Solving
-84 + x2 = 25x

Solving for variable 'x'.

Reorder the terms:
-84 + -25x + x2 = 25x + -25x

Combine like terms: 25x + -25x = 0
-84 + -25x + x2 = 0

Factor a trinomial.
(-3 + -1x)(28 + -1x) = 0

Subproblem 1

Set the factor '(-3 + -1x)' equal to zero and attempt to solve: Simplifying -3 + -1x = 0 Solving -3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1x = 0 + 3 -1x = 0 + 3 Combine like terms: 0 + 3 = 3 -1x = 3 Divide each side by '-1'. x = -3 Simplifying x = -3

Subproblem 2

Set the factor '(28 + -1x)' equal to zero and attempt to solve: Simplifying 28 + -1x = 0 Solving 28 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + -1x = 0 + -28 Combine like terms: 28 + -28 = 0 0 + -1x = 0 + -28 -1x = 0 + -28 Combine like terms: 0 + -28 = -28 -1x = -28 Divide each side by '-1'. x = 28 Simplifying x = 28

Solution

x = {-3, 28}

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