Posted by **Brandon** on Thursday, May 12, 2011 at 6:21pm.

Find the number of times r is a root of P(x)=0.

1. P(x)=x^4+4x^3-16x-16; r=-2

2. P(x)=x^5+3x^4+2x^3-2x^2-3x-1; r=-1

3. When x^3-5x^2+4x+5 is divided by x-c, the quotient is x^2-3x-2 and the remainder is 1. Find c.

Thanks

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