Question

4. If x > 0 and x² + 1/9x² = 25/36, find : x³+ 1/27x³.
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Answer 1

Answer:

-35/216,37/216

Step-by-step explanation:

do (a+b)^2 from here we get the value of a+b after that do (a+b)^3.

Answer 2

Answer:

x²(1+1/9)=25/36

x²(10/9)=25/36

x²=25/36×9/10

x²=5/8

x³=5/8³/²

so,x³(1+1/27)=5/8³/²(28/27)

ans=5/8³/²(28/27)