given that x-y =7and xy=8,find the value of(x+y)^2.
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Answered by
1
Answer:
81 and x+y = 9.
Step-by-step explanation:
x-y = 7, xy = 8
(x-y)² = x² + y² - 2xy
49 = x² + y² - 16
x² + y² = 65.
(x+y)² = x² + y² + 2xy = 65 + 16 = 81
Answered by
0
Answer:65
Step-by-step explanation:
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