When a+b = 8 and ab = 24, then find a³+b³ ?
Answers
Answered by
1
Answer:
8³+8³and 24³+24³
Step-by-step explanation:
As the question is asked a+b = 8 and ab= 24 find a³+b³
We should replace the digits into numbers
a+b = 8³+8³ and a+b = 24³+24³
Answered by
1
Answer:
-64
Step-by-step explanation:
(a+b)³=(a³+b³+3a²b+3ab²)
8³ =a³+b³+3(a²b+ab²)
8³ =a³+b³+3ab(a+b)
8³ =a³+b³+ 3×24×(8)
512=a³+b³+ 576
512-576=a³+b³
-64 = a³+b³
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