9x^2-30x+225=300

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Solution for 9x^2-30x+225=300 equation:


Simplifying
9x2 + -30x + 225 = 300

Reorder the terms:
225 + -30x + 9x2 = 300

Solving
225 + -30x + 9x2 = 300

Solving for variable 'x'.

Reorder the terms:
225 + -300 + -30x + 9x2 = 300 + -300

Combine like terms: 225 + -300 = -75
-75 + -30x + 9x2 = 300 + -300

Combine like terms: 300 + -300 = 0
-75 + -30x + 9x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-25 + -10x + 3x2) = 0

Factor a trinomial.
3((-5 + -3x)(5 + -1x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-5 + -3x)' equal to zero and attempt to solve: Simplifying -5 + -3x = 0 Solving -5 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -3x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -3x = 0 + 5 -3x = 0 + 5 Combine like terms: 0 + 5 = 5 -3x = 5 Divide each side by '-3'. x = -1.666666667 Simplifying x = -1.666666667

Subproblem 2

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Solution

x = {-1.666666667, 5}

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