19
If $a^{3} + b^{3}$ = 341 and ab = 30, then what is the value of a + b?
- A1
- B9
- C7
- D11
Answer not set
Discussion 1
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CCommunity
$ (a + b)^3 = a^3 + b^3 + 3ab(a + b)$
$(a + b)^3 = 341 + 90(a+b)$
On Solving $(a + b) = 11$
$(a + b)^3 = 341 + 90(a+b)$
On Solving $(a + b) = 11$