Question

(5y+x)^3 expand the following​

Answer 1

Answer:

125y^3 + 27 + 225y^2 + 135y

Step-by-step explanation:

Answer 2

Step-by-step explanation:

identity used = (x+y)^3=x^3+3x^2y+3xy^2+y^3

a=5y. and. b=x

then,

=(5y)^3+3 (5y)^2 (x)+3 (5y)(x)^2+x^3

=125y^3+3 ×125y^2×x+15x^2y+×^3

=125y^3+375xy^2+15x^2y+x^3

hope this helps you....