25x+x*x=900

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Solution for 25x+x*x=900 equation:


Simplifying
25x + x * x = 900

Multiply x * x
25x + x2 = 900

Solving
25x + x2 = 900

Solving for variable 'x'.

Reorder the terms:
-900 + 25x + x2 = 900 + -900

Combine like terms: 900 + -900 = 0
-900 + 25x + x2 = 0

Factor a trinomial.
(-45 + -1x)(20 + -1x) = 0

Subproblem 1

Set the factor '(-45 + -1x)' equal to zero and attempt to solve: Simplifying -45 + -1x = 0 Solving -45 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '45' to each side of the equation. -45 + 45 + -1x = 0 + 45 Combine like terms: -45 + 45 = 0 0 + -1x = 0 + 45 -1x = 0 + 45 Combine like terms: 0 + 45 = 45 -1x = 45 Divide each side by '-1'. x = -45 Simplifying x = -45

Subproblem 2

Set the factor '(20 + -1x)' equal to zero and attempt to solve: Simplifying 20 + -1x = 0 Solving 20 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -1x = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -1x = 0 + -20 -1x = 0 + -20 Combine like terms: 0 + -20 = -20 -1x = -20 Divide each side by '-1'. x = 20 Simplifying x = 20

Solution

x = {-45, 20}

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