Question

Factor by grouping:y^3-5y^2+3y-15

Answer 1

we have the expression

y^3-5y^2+3y-15

Grouping terms

(y^3-5y^2)+(3y-15)

factor y^2

y^2(y-5)+(3y-15)

factor 3

y^2(y-5)+3(y-5)

factor (y-5)

(y-5)[y^2+3]