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√(-10 - 5n2 - 330) = i√(5n2 + 340) = i√[(5(n2 + 68)]
5n2 + 17n + 6 is a quadratic expression. It can be factorised as 5n2 + 17n + 6 = (5n + 2)(n + 3). The expression can be expressed as equal to to a fixed or variable amount when it becomes a function of n. Example : 5n2 + 17n + 6 = 7 or y = 5n2 + 17n + 6
5 * * * * * No. It should be 5n2
(5n + 1)(n + 7)
-4n3 + 8n2 - 4n + 7