find the value of x3+y3 when x+y=-5 and xy=8
Sakshi15403:
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hloo frnd and your answer is as follows......
(x+y)^3 = x3 + y3 + 3xy(x+y)
(-5)^3 = x3 + y3 + 3×8(-5)
-125 = x3 + y3 -120
-125+120= x3+y3
x3 + y3 = -5
hope it may helps u and all the best for your exam....☺☺
(x+y)^3 = x3 + y3 + 3xy(x+y)
(-5)^3 = x3 + y3 + 3×8(-5)
-125 = x3 + y3 -120
-125+120= x3+y3
x3 + y3 = -5
hope it may helps u and all the best for your exam....☺☺
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