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719° Girl! Out of a group of swans ,-times the square root cf the number are paying on the shore of a tank.The two remaining ones are playing, with amorous fight, in the water. What is the total number of swans? |
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Answer» Let the total no. of swans = xNo. of swans playing on the shore = 7/2 √xRemaining swans = 2A/Q x=7/2 √x+2x-2 = 7/2 √x2(x-2) = 7√x4(x-2)² = 49x4(x²-4x+4) = 49x4x²-65+16 = 0(x-16) (4x -1) = 0x-16 = 0 or 4x-1 = 0x = 16 or x = 1/4Since, the no. of swans cannot be 1/4∴ x = 16The total no.of swans = 16 hit like if you find it useful |
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