x³+y³=8 and x²+y²=4 then x+y=?
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x³+y³=8
=>(x+y)³=8+3
=>x+y=cube root of 11
=>(x+y)³=8+3
=>x+y=cube root of 11
UnknownUsername:
i've done a mistake. it's on another comment
Answered by
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This answer will be
X + Y = 2
X + Y = 2
how??
sorry mistake. I added 3 instead of subtracting it, then the result will come cube root 5, but bt the second equation, we have x+y=2. this is done by using the formula (a+b)to the power x = a to the power x + b to the power x + xab. sorry for the minor mistake of transposition. this question had different answers, because a²+b² is not equal to a+b whole square
sorry but couldn't understand
I couldn't understand
please give me picture of the solution
soory. i have done many mistakes. use the formula a²+b²+2ab=a+b whole square along with some transposition. i don't know how to put pictures in the comments. just tell me how and i will do it, but i don't get all time to do this app
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