Question

Given that x- y=8,xy=5 find value of x² +y²
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Answer 1

Answer:

74

Step-by-step explanation:

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

8^2 = x^2 + y^2 - 2*5

64 = x^2 + y^2 - 10

x^2 + y^2 = 64 + 10 = 74