Question

(a+7b)^3 expand this problem

Answer 1

Answer:

(a+7b)^3=

a^3+3*a^2*7b+3*a*(7b)^2+(7b)^3

= a^3+21a^2b+147ab^2+343b^3

Answer 2

Answer: hope this helps you

(a+7b)^3

let, x=a

y=7b

(x+y)^3=  x^3 + y^3 + 3xy(x+y)

(a+7b)^3=a^3+(7b)^3+3*a*7b(a+7b)

            =a^3+343b^3+21ab(a+7b)

Step-by-step explanation: please mark me as the brainliest