3x(x-10)+80=5

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Solution for 3x(x-10)+80=5 equation:


Simplifying
3x(x + -10) + 80 = 5

Reorder the terms:
3x(-10 + x) + 80 = 5
(-10 * 3x + x * 3x) + 80 = 5
(-30x + 3x2) + 80 = 5

Reorder the terms:
80 + -30x + 3x2 = 5

Solving
80 + -30x + 3x2 = 5

Solving for variable 'x'.

Reorder the terms:
80 + -5 + -30x + 3x2 = 5 + -5

Combine like terms: 80 + -5 = 75
75 + -30x + 3x2 = 5 + -5

Combine like terms: 5 + -5 = 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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