Question

x+y=7, xy=10 find x-y
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Answer 1

Answer:

${(x - y)}^{2} = {(x + y)}^{2} - 4xy = {7}^{2} - 40 = 49 - 40 = 9 \\ x - y = \sqrt{9} = 3$

Hope it helps

Answer 2

I hope it 's helpful for u