Q^2=20-8Q

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Solution for Q^2=20-8Q equation:


Simplifying
Q2 = 20 + -8Q

Solving
Q2 = 20 + -8Q

Solving for variable 'Q'.

Reorder the terms:
-20 + 8Q + Q2 = 20 + -8Q + -20 + 8Q

Reorder the terms:
-20 + 8Q + Q2 = 20 + -20 + -8Q + 8Q

Combine like terms: 20 + -20 = 0
-20 + 8Q + Q2 = 0 + -8Q + 8Q
-20 + 8Q + Q2 = -8Q + 8Q

Combine like terms: -8Q + 8Q = 0
-20 + 8Q + Q2 = 0

Factor a trinomial.
(-10 + -1Q)(2 + -1Q) = 0

Subproblem 1

Set the factor '(-10 + -1Q)' equal to zero and attempt to solve: Simplifying -10 + -1Q = 0 Solving -10 + -1Q = 0 Move all terms containing Q to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -1Q = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -1Q = 0 + 10 -1Q = 0 + 10 Combine like terms: 0 + 10 = 10 -1Q = 10 Divide each side by '-1'. Q = -10 Simplifying Q = -10

Subproblem 2

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

Solution

Q = {-10, 2}

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