Question

19. If x2 + y2 = 68 and xy = 2, then find the 2
value of x- y.
(A) + 6
(B) + 8
(C) + 4
(D) +9
(E) None of these​

Answer 1

Answer:

none of these __&&__________________

Answer 2

Answer:

(D) +8

Step-by-step explanation:

(x - y)² = x² + y² - 2xy

(x - y)² = 68 - 2×2

(x - y)² = 68 - 4

(x - y)² = 64

(x - y) = √64

x - y = 8

Hope this helps.

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