Question

If a/b = 7/3 then find the value of a^3 - b^3/b^3

please solve I need it.....

Answer 1

Hello friend
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Thanks for your question.

=) In example

=) a/b = 7/3 then a/7 = b/3 = k

=) a = 7k, b = 3k

Now we can easily find the value

So let's go,

=) a^3 - b^3/b^3

= (7k)^3 - (3k)^3/(3k)^3

=) 343k^3 -27k^3/27k^3

=) 316k^3/27k^3

=) 316/27

Therefore a^3-b^3/b^3. = 316/27

I hope this will helps you.

keep asking.

Thanks.