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Simplifying
9p2 + -9 = 891
Reorder the terms:
-9 + 9p2 = 891
Solving
-9 + 9p2 = 891
Solving for variable 'p'.
Move all terms containing p to the left, all other terms to the right.
Add '9' to each side of the equation.
-9 + 9 + 9p2 = 891 + 9
Combine like terms: -9 + 9 = 0
0 + 9p2 = 891 + 9
9p2 = 891 + 9
Combine like terms: 891 + 9 = 900
9p2 = 900
Divide each side by '9'.
p2 = 100
Simplifying
p2 = 100
Take the square root of each side:
p = {-10, 10}
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