p^2-4p-15=6

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Solution for p^2-4p-15=6 equation:


Simplifying
p2 + -4p + -15 = 6

Reorder the terms:
-15 + -4p + p2 = 6

Solving
-15 + -4p + p2 = 6

Solving for variable 'p'.

Reorder the terms:
-15 + -6 + -4p + p2 = 6 + -6

Combine like terms: -15 + -6 = -21
-21 + -4p + p2 = 6 + -6

Combine like terms: 6 + -6 = 0
-21 + -4p + p2 = 0

Factor a trinomial.
(-3 + -1p)(7 + -1p) = 0

Subproblem 1

Set the factor '(-3 + -1p)' equal to zero and attempt to solve: Simplifying -3 + -1p = 0 Solving -3 + -1p = 0 Move all terms containing p to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1p = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1p = 0 + 3 -1p = 0 + 3 Combine like terms: 0 + 3 = 3 -1p = 3 Divide each side by '-1'. p = -3 Simplifying p = -3

Subproblem 2

Set the factor '(7 + -1p)' equal to zero and attempt to solve: Simplifying 7 + -1p = 0 Solving 7 + -1p = 0 Move all terms containing p to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1p = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1p = 0 + -7 -1p = 0 + -7 Combine like terms: 0 + -7 = -7 -1p = -7 Divide each side by '-1'. p = 7 Simplifying p = 7

Solution

p = {-3, 7}

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