7p^2-42p=-56

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Solution for 7p^2-42p=-56 equation:


Simplifying
7p2 + -42p = -56

Reorder the terms:
-42p + 7p2 = -56

Solving
-42p + 7p2 = -56

Solving for variable 'p'.

Reorder the terms:
56 + -42p + 7p2 = -56 + 56

Combine like terms: -56 + 56 = 0
56 + -42p + 7p2 = 0

Factor out the Greatest Common Factor (GCF), '7'.
7(8 + -6p + p2) = 0

Factor a trinomial.
7((2 + -1p)(4 + -1p)) = 0

Ignore the factor 7.

Subproblem 1

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

Subproblem 2

Set the factor '(4 + -1p)' equal to zero and attempt to solve: Simplifying 4 + -1p = 0 Solving 4 + -1p = 0 Move all terms containing p to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1p = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1p = 0 + -4 -1p = 0 + -4 Combine like terms: 0 + -4 = -4 -1p = -4 Divide each side by '-1'. p = 4 Simplifying p = 4

Solution

p = {2, 4}

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