Question

express {(x,y)x²+y²=25,x.y€n)}​

Answer 1

Answer:

hello friend here is your answer

we know x√2+y√+2xy=x√2+y√2

so apply 2xy on both sides

x√2+y√2+2xy=25+2xy

x√2+y√2+2xy=27xy

x√2+y√2=27xy-2xy

x√2+y√2=25

Hence proved

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