3x^2=30x-75

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Solution for 3x^2=30x-75 equation:


Simplifying
3x2 = 30x + -75

Reorder the terms:
3x2 = -75 + 30x

Solving
3x2 = -75 + 30x

Solving for variable 'x'.

Reorder the terms:
75 + -30x + 3x2 = -75 + 30x + 75 + -30x

Reorder the terms:
75 + -30x + 3x2 = -75 + 75 + 30x + -30x

Combine like terms: -75 + 75 = 0
75 + -30x + 3x2 = 0 + 30x + -30x
75 + -30x + 3x2 = 30x + -30x

Combine like terms: 30x + -30x = 0
75 + -30x + 3x2 = 0

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

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

Ignore the factor 3.

Subproblem 1

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

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 = {5, 5}

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