3 years ago

If x^2+y^2=73 and xy=24, what is the value of (x+y)^2? And Why?

Mathematics

1 answer:

nydimaria [60]3 years ago

7 0

(x+y)^2=x^2+y^2+2xy=73+2*24=73+48=121

⇒ (x+y)^2=121

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