P=(100Q-10Q^2)-(20+10Q)

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Solution for P=(100Q-10Q^2)-(20+10Q) equation: 


Simplifying
P = (100Q + -10Q2) + -1(20 + 10Q)

Remove parenthesis around (100Q + -10Q2)
P = 100Q + -10Q2 + -1(20 + 10Q)
P = 100Q + -10Q2 + (20 * -1 + 10Q * -1)
P = 100Q + -10Q2 + (-20 + -10Q)

Reorder the terms:
P = -20 + 100Q + -10Q + -10Q2

Combine like terms: 100Q + -10Q = 90Q
P = -20 + 90Q + -10Q2

Solving
P = -20 + 90Q + -10Q2

Solving for variable 'P'.

Move all terms containing P to the left, all other terms to the right.

Simplifying
P = -20 + 90Q + -10Q2

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