5r^2=-16r+16

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Solution for 5r^2=-16r+16 equation:


Simplifying
5r2 = -16r + 16

Reorder the terms:
5r2 = 16 + -16r

Solving
5r2 = 16 + -16r

Solving for variable 'r'.

Reorder the terms:
-16 + 16r + 5r2 = 16 + -16r + -16 + 16r

Reorder the terms:
-16 + 16r + 5r2 = 16 + -16 + -16r + 16r

Combine like terms: 16 + -16 = 0
-16 + 16r + 5r2 = 0 + -16r + 16r
-16 + 16r + 5r2 = -16r + 16r

Combine like terms: -16r + 16r = 0
-16 + 16r + 5r2 = 0

Factor a trinomial.
(-4 + -1r)(4 + -5r) = 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 '(4 + -5r)' equal to zero and attempt to solve: Simplifying 4 + -5r = 0 Solving 4 + -5r = 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 + -5r = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -5r = 0 + -4 -5r = 0 + -4 Combine like terms: 0 + -4 = -4 -5r = -4 Divide each side by '-5'. r = 0.8 Simplifying r = 0.8

Solution

r = {-4, 0.8}

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