Question

If x+y=8 and xy=15,findx2 +y2

Answer 1

Answer:

(a+b)^2= a^2+2ab+b^2ab

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

8^2=x^2+y^2+2 (15)

64=x^2+y^2+30

x^2+y^2=64-30

x^2+y^2=34

Step-by-step explanation:

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