If a + b = 1 and ab = -6, then what is the value of a3 + b3?1). 172). 153). 194). 13
Since we know that (a + b) 3 = a3 + b3 + 3ab(a + b), put all the values given values
⇒ 13 = a3 + b3 + 3 × 3(- 6)
⇒ a3 + b3 = 19
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