Question

given (x² + y²) = 5 and xy = 36, find the value of
a. x+y

b. x-y​

Answer 1

Answer:

Ok

Step-by-step explanation:

x+y

2²+1²

4+1

5

x-y

3²-2²

9-4

5

Answer 2

Step-by-step explanation:

a) (x+y)² = x²+y²+2xy

(x+y)² = 5 +2×36

(x+y)² = 5+72 = 77

x+y = √77 = 8.77

b). (x-y)²= x²+y²-2xy

(x-y)² = 5 - 2×36

(x-y)² = 5 -72 = 67

x-y = √67 = 8.18

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