Question

If x+y=8 xy=15 find x square +y square

Answer 1

Answer:

34

Step-by-step explanation:

see in the attachment.

Answer 2

Answer:

xy = 15

x + y = 8 -----eq (1)

Squaring both sides ,

x^2 + y^2 + 2xy = 64

x^2 + y^2 + 2(15) = 64

x^2 + y^2 = 64 - 30

x^2 + y^2 = 34

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