Question

if x+y=9 & x = 20 find the value of x²+y²​

Answer 1

Answer:

20+y=9

y=-11

x^2+y^2=(20)^2+(-11)^2

=400+121

=521

I hope it's correct

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Answer 2

Answer:

x+y=9

=>20+y=9 {given x=20}

=>y= -11

**x²+y²**

=> (20)²+(-11)²

=>400+121

=>521

Step-by-step explanation:

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