if a+b =11 and ab = 28 find the value of a3 +b3
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Answered by
8
Hey
I hope this helps mate :)
I hope this helps mate :)
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raven3:
if it helps, kindly mark it as the brainliest :D
your answer seems to be wrong
yes, I'm so very sorry. Ive written 2ab instead of ab. that's why. the second part of the answer is incorrect, as the formula is not correct. I'm extremely sorry, I'll correct it right away.
the answer will be 393
Answered by
5
a+b = 11
ab=28 then we can guess that that a =7 and b = 4
so 7^3+4^3= 343 +64
= 407
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