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Q.

If $a + b = 8, a b = 15$ , then $a^{3} + b^{3} =$

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a

8

b

152

c

15

d

$- 152$

answer is C.

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Detailed Solution

$a + b = 8, a b = 15$

We know that $a^{3} + b^{3} = (a + b) (a^{2} - a b + b^{2})$

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