r^2=4r+32

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Solution for r^2=4r+32 equation:


Simplifying
r2 = 4r + 32

Reorder the terms:
r2 = 32 + 4r

Solving
r2 = 32 + 4r

Solving for variable 'r'.

Reorder the terms:
-32 + -4r + r2 = 32 + 4r + -32 + -4r

Reorder the terms:
-32 + -4r + r2 = 32 + -32 + 4r + -4r

Combine like terms: 32 + -32 = 0
-32 + -4r + r2 = 0 + 4r + -4r
-32 + -4r + r2 = 4r + -4r

Combine like terms: 4r + -4r = 0
-32 + -4r + r2 = 0

Factor a trinomial.
(-4 + -1r)(8 + -1r) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(8 + -1r)' equal to zero and attempt to solve: Simplifying 8 + -1r = 0 Solving 8 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1r = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1r = 0 + -8 -1r = 0 + -8 Combine like terms: 0 + -8 = -8 -1r = -8 Divide each side by '-1'. r = 8 Simplifying r = 8

Solution

r = {-4, 8}

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