Question

If x+y=8 and xy=15, then
${x}^{2} + {y}^{2}$
a. 34
b. 32
c. 36
d. 1
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Answer 1

Answer:

34

Step-by-step explanation:

$(x+y)^{2} =x^{2} +y^{2} +2xy$

64=30+x^{2}+y^{2}