Hi, please help me to solve this problem :-
x-y = 9
xy = -4
Find the value of x²+y²
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We know that,
(x-y)² = x²-2xy+y²
Putting the values we get,
(9)² = x²+y²-2xy
81 = x²+y²-2x(-4)
81 = x²+y²+8
81-8 = x²+y²
73 = x²+y²
HOPE IT HELPS YOU AND YOU FIND IT INFORMATIVE
(x-y)² = x²-2xy+y²
Putting the values we get,
(9)² = x²+y²-2xy
81 = x²+y²-2x(-4)
81 = x²+y²+8
81-8 = x²+y²
73 = x²+y²
HOPE IT HELPS YOU AND YOU FIND IT INFORMATIVE
Jatin0001:
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