using factors theorem,prove that (x+3)is a factor of x⁵+3x⁴-x³-3x²+5x+15

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using factors theorem,prove that (x+3)is a factor of x⁵+3x⁴-x³-3x²+5x+15​

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using factors theorem,prove that (x+3)is a factor of x⁵+3x⁴-x³-3x²+5x+15​