Question

Check the answer of the question.y³+5y²+12y+9 by y+2

Answer 1

Answer:

f(y)=y^3+5y^2+12y+9 and zero of the y+2 is-2

so f(-2)=-8+20-24+9=-32+29=-3 this is not equal to zero.

so y+2 is not a zero of the given polynomial