Algebra 2
posted by Brandon on .
Find the number of times r is a root of P(x)=0.
1. P(x)=x^4+4x^316x16; r=2
2. P(x)=x^5+3x^4+2x^32x^23x1; r=1
3. When x^35x^2+4x+5 is divided by xc, the quotient is x^23x2 and the remainder is 1. Find c.
Thanks

1. P(x)=(x2)(x+2)^3 3 times
2. P(x)=(x1)(x+1)^4 4 times
3. x^35x^2+4x+5=(x^23x2)(xc)+1=>5=2c+1
c=2