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CBSE Class 10 Answered

The angry arjun carried some arrows for fighting with  bheeshm with half 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 arroweach he respectively knocked down the rath,flag,bow of bheeshm.finally with one more than 4 times square root of arrows he laid bheeshm unconscious on arrow bed.find the total no arrows.

Asked by arajeevshashank | 22 Jun, 2020, 09:21: AM
Expert Answer
Let the number of arrows arjun has be x.
Half of it, he used to cut down the arrows of bheeshm.
He is left with x/2 no. of arrows.
6+3 = 9 arrows have been used to kill the rath driver, rath, flag and bow of bheeshm.
4root{x} + 1 arrows have been used to laid bheeshm unconcious.
A c c o r d i n g space t o space t h e space q u e s t i o n comma
x over 2 equals 9 plus 4 square root of x plus 1
x over 2 equals 4 square root of x plus 10
x equals 8 square root of x plus 20
x minus 8 square root of x minus 20 equals 0
x minus 10 square root of x plus 2 square root of x minus 20 equals 0
square root of x open parentheses square root of x minus 10 close parentheses plus 2 open parentheses square root of x minus 10 close parentheses equals 0
open parentheses square root of x plus 2 close parentheses open parentheses square root of x minus 10 close parentheses equals 0
square root of x equals negative 2 space space o r space space square root of x equals 10
S i n c e comma space square root of x space c a n apostrophe t space b e space n e g a t i v e
rightwards double arrow space square root of x equals 10
rightwards double arrow x equals 100
Hence, the number of arrows Arjun has is 100.
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