Question

Evaluat each of the following using identities
(y+3) ³​

Answer 1

Answer:

using identity =(a+b)^3=a3+b3+3ab(a+b)

(y+3)3=y3+3^3+3×y×3(y+3)

y3+27+9y(y+3)

y3+27+9y2+27y

Answer 2

Answer:

by using identity

(a+b)^3= a^3+b^3 +3ab^2 - 3a^2b

(y+3)^3 = y^3 +( 3)^3 + 3 × y×(3)^2 + 3×(y)^2 ×3

= y^3 + 27 + 27y - 9y^2

the answer is

y^3 - 9y^2 + 27y + 27