Question

evaluate the following using suitable identities (2y+3)³​

Answer 1

Answer:

we know (a+b)^3=a^3+3a^2b+3ab^2+b^3

so,

(2y+3)^3

=(2y)^3+3.(2y)^2.3+3.2y.(3)^2+(3)^3

=8y^3+36y^2+54y+27