Question

3. Check whether the polynomial p(y) = 8y3 + 4y? - y-3 is a multiple of (2y + 3).
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Answer 1

2y+3=0

2y= -3

2y= -3/2

8y^3+4y-y-3

8(-3/2)^3+4(-3/2)-(-3/2)-3

8(-27/8)-12/2+3/2-3

-27-6+3/2-3

-54-12+3-6

2

-66-3

2

= -69/2