X^2-11X+30=12

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Solution for X^2-11X+30=12 equation:


Simplifying
X2 + -11X + 30 = 12

Reorder the terms:
30 + -11X + X2 = 12

Solving
30 + -11X + X2 = 12

Solving for variable 'X'.

Reorder the terms:
30 + -12 + -11X + X2 = 12 + -12

Combine like terms: 30 + -12 = 18
18 + -11X + X2 = 12 + -12

Combine like terms: 12 + -12 = 0
18 + -11X + X2 = 0

Factor a trinomial.
(2 + -1X)(9 + -1X) = 0

Subproblem 1

Set the factor '(2 + -1X)' equal to zero and attempt to solve: Simplifying 2 + -1X = 0 Solving 2 + -1X = 0 Move all terms containing X to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1X = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1X = 0 + -2 -1X = 0 + -2 Combine like terms: 0 + -2 = -2 -1X = -2 Divide each side by '-1'. X = 2 Simplifying X = 2

Subproblem 2

Set the factor '(9 + -1X)' equal to zero and attempt to solve: Simplifying 9 + -1X = 0 Solving 9 + -1X = 0 Move all terms containing X to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1X = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1X = 0 + -9 -1X = 0 + -9 Combine like terms: 0 + -9 = -9 -1X = -9 Divide each side by '-1'. X = 9 Simplifying X = 9

Solution

X = {2, 9}

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