Q35 of 39 Page 91

Solve for x: .


Taking L.C.M we get,




Cross Multiplying and solving we get,


8 x2 – 17 x + 2 = 30 x – 15


8 x2 – 47 x – 13 = 0


For solving we will use Quadratic formula,


We know that the roots of equation a x2 + b x + c = 0 is given by,



For our quadratic equation, a = 8, b = – 47 and c = – 13




So the roots of the given equation are given by,



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The angry Arjun carried some arrows for fighting with Bhesshm. With the half of the arrows, he cut down the arrows thrown by Bheeshm on him and with six other arrows he killed the rath driver of Bheeshm, with one arrow each he knocked down respectively the rath flag and the bow of Bheeshm. Finally, with one more than four times the square root of arrows, he laid Bheeshm unconscious on an arrow bed. Find the total number of arrows Arjun had.

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If 5x – 2y = 7 and xy = 2 find the value of (5x + 2y)2

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