Question

(3x+5/x)^3 expand using identity​

Answer 1

Answer:

(3x)³+(5/x)³+3×3x×5/x(3x+5/x)

27x³+125/x³+45(3x+5/x)

27x³+125/x³+135x+225/x

Answer 2

Answer:3a+5b(3a^2+15ab+25b^2)

Step-by-step explanation:

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

X=a;1/x=b

(3a+5b)^3=3a+5b(3a^2+15ab+25b^2)