p^2-9p=90

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Solution for p^2-9p=90 equation:


Simplifying
p2 + -9p = 90

Reorder the terms:
-9p + p2 = 90

Solving
-9p + p2 = 90

Solving for variable 'p'.

Reorder the terms:
-90 + -9p + p2 = 90 + -90

Combine like terms: 90 + -90 = 0
-90 + -9p + p2 = 0

Factor a trinomial.
(-6 + -1p)(15 + -1p) = 0

Subproblem 1

Set the factor '(-6 + -1p)' equal to zero and attempt to solve: Simplifying -6 + -1p = 0 Solving -6 + -1p = 0 Move all terms containing p to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + -1p = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -1p = 0 + 6 -1p = 0 + 6 Combine like terms: 0 + 6 = 6 -1p = 6 Divide each side by '-1'. p = -6 Simplifying p = -6

Subproblem 2

Set the factor '(15 + -1p)' equal to zero and attempt to solve: Simplifying 15 + -1p = 0 Solving 15 + -1p = 0 Move all terms containing p to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -1p = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -1p = 0 + -15 -1p = 0 + -15 Combine like terms: 0 + -15 = -15 -1p = -15 Divide each side by '-1'. p = 15 Simplifying p = 15

Solution

p = {-6, 15}

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