Question

9cube+5 cube devided by 9 square +5 square - x =14
X =?
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Answer 1

Answer:

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Answer 2

Answer:

We have:x2+y2=54xy=14We know that:⇒(x+y)2=x2+y2+2.xyPutting all the values we get,(x+y)2=54+2×14=82⇒x+y=82‾‾‾√Now⇒x3+y3=(x+y)(x2+y2−xy)Putting all the values we get,x3+y3=82‾‾‾√(54−14)=4082‾‾‾√⇒x3+y3=4082‾‾‾√