If a + b = 8 and ab = 6 ,find the value of a3 + b3
Answers
Answered by
64
a+b=8 ab=6
a^3+b^3= (a+b)^3-3a^2b-3ab^2
= (8)^3-3ab(a+b)
= 8^3-3×6(8)
=512-144
= 368
Answered by
20
a3+b3=(a+b)+(b+a)*ba
8*8*6
64*6
384
8*8*6
64*6
384
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