(9r+5)(r^2-16r+63)=0

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Solution for (9r+5)(r^2-16r+63)=0 equation: 


Simplifying
(9r + 5)(r2 + -16r + 63) = 0

Reorder the terms:
(5 + 9r)(r2 + -16r + 63) = 0

Reorder the terms:
(5 + 9r)(63 + -16r + r2) = 0

Multiply (5 + 9r) * (63 + -16r + r2)
(5(63 + -16r + r2) + 9r * (63 + -16r + r2)) = 0
((63 * 5 + -16r * 5 + r2 * 5) + 9r * (63 + -16r + r2)) = 0
((315 + -80r + 5r2) + 9r * (63 + -16r + r2)) = 0
(315 + -80r + 5r2 + (63 * 9r + -16r * 9r + r2 * 9r)) = 0
(315 + -80r + 5r2 + (567r + -144r2 + 9r3)) = 0

Reorder the terms:
(315 + -80r + 567r + 5r2 + -144r2 + 9r3) = 0

Combine like terms: -80r + 567r = 487r
(315 + 487r + 5r2 + -144r2 + 9r3) = 0

Combine like terms: 5r2 + -144r2 = -139r2
(315 + 487r + -139r2 + 9r3) = 0

Solving
315 + 487r + -139r2 + 9r3 = 0

Solving for variable 'r'.

The solution to this equation could not be determined.

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