1. What is the value of $$a^3 + b^3$$ ?
I. $$a^2 + b^2 = 22$$
II. $$ab = 3$$
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By: anil on 05 May 2019 02.32 am
Considering first statement only, nothing absolute can be said about the value of $$a^3 + b^3$$ similarly considering 2nd statement only nothing absolute can be said about the value of $$a^3 + b^3$$.
When we consider both statements together two values of (a+b) can be possible as $$sqrt{28}$$ and $$-sqrt{28}$$
By which two possible values of $$a^3 + b^3$$. Nothing absolute can be said about it.
Hence answer will be D).
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When we consider both statements together two values of (a+b) can be possible as $$sqrt{28}$$ and $$-sqrt{28}$$
By which two possible values of $$a^3 + b^3$$. Nothing absolute can be said about it.
Hence answer will be D).