Math, asked by patoo8597, 1 year ago

if x+y=13andxy=1 find x^2+9y^2

Answers

Answered by praveen04012004
0

Answer:

Step-by-step explanation:

xy=1

so

x=1/y   .....................................(1)

x+y= 13

1/y+Y=13

1+y^{2}=13y

i think , now you can solve it easily

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