Question

Answer the following questions:
If x+y = 12 and xy = 27, find the value x + y​

Answer 1

Answer:

xy- x+y = 27-12=15 answer

Step-by-step explanation:

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Answer 2

Answer:

x + y= 12

(x+y) ^2= (12)^2

x^2+y^2+2xy= 144

x^2+y^2+2(27)= 144

x^2+y^2+54=144

x^2+y^2=144-54

x^2+y^2= 90

x+y= root 90

x+y= 3 root 10