Question

यदि x-y =1 तथा xy=6 तो x+y का मान ज्ञान करो​

Answer 1

Answer:

5

Explanation:

x-y=1

xy=6

$x - y = 1 \\ {(x - y)}^{2} = {1}^{2} \\ {x}^{2} + {y}^{2} - 2xy = 1 \\ {x}^{2} + {y}^{2} + 2xy = 1 + 4xy \\ {(x + y)}^{2} = 1 + 4 \times 6 \\ {(x + y)}^{2} = 1 + 24 \\ (x + y) = \sqrt{25} \\ x + y = 5$

Hope it helps you.