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\left. \begin{array} { l } { \text { If } x ^ { 2 } + 9 y ^ { 2 } + 25 z ^ { 2 } = x y z ( \frac { 15 } { x } + \frac { 5 } { y } + \frac { 3 } { z } ) \text { then } x , y , z \text { in } } \\ { ( A ) A P \quad ( B ) G P } & { ( C ) H P } \end{array} \right. |
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Answer» X2+ 9y2+25z2= 15yz + 5xz + 3xyÞX2+ 9y2+ 25z2-15yz-5xz - 3xyÞ(x-3y)2+ (3y-5z)2+(5z-x)2= 0Þx = 3y , 3y = 5z, 5z = xÞx =lm, y = (l/3) , z = (l/5)or x, y, z are in H.P kuch bhi it is correct yrr..... |
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