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n2 = 20 + n

so n2 - n - 20 = 0

that is (n - 5)(n + 4) = 0

so that n - 5 = 0 or n + 4 = 0

n = 5 or n = -4

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13y ago

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Q: How do you solve n2 equals 20 plus n by factoring?
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