Question

expansion of(a/5+b/2)³​

Answer 1

Step-by-step explanation:

in attachment

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this mathed is expansion of bionomical

Answer 2

Step-by-step explanation:

(a/5+b/2)^3

(A+B)^3=A^3+B^3+3AB(A+B)

A=a/5

B=b/2

a/5^3 +b/2^3+3*a/5*b/2*(a/5+b/2)

a/125+b/8+3ab/10(5a+2b/10)

a/125+b/8+(15a^2b+6ab^2/100)

take LCM

[{8a+125b+10(15a^2b+6ab^2)}] /1000