4p^2=21-5p

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Solution for 4p^2=21-5p equation:


Simplifying
4p2 = 21 + -5p

Solving
4p2 = 21 + -5p

Solving for variable 'p'.

Reorder the terms:
-21 + 5p + 4p2 = 21 + -5p + -21 + 5p

Reorder the terms:
-21 + 5p + 4p2 = 21 + -21 + -5p + 5p

Combine like terms: 21 + -21 = 0
-21 + 5p + 4p2 = 0 + -5p + 5p
-21 + 5p + 4p2 = -5p + 5p

Combine like terms: -5p + 5p = 0
-21 + 5p + 4p2 = 0

Factor a trinomial.
(-3 + -1p)(7 + -4p) = 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 + -4p)' equal to zero and attempt to solve: Simplifying 7 + -4p = 0 Solving 7 + -4p = 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 + -4p = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -4p = 0 + -7 -4p = 0 + -7 Combine like terms: 0 + -7 = -7 -4p = -7 Divide each side by '-4'. p = 1.75 Simplifying p = 1.75

Solution

p = {-3, 1.75}

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