Question

if (a+1/a)²=3 , show that a³+1/a³=0​

Answer 1

Answer:

Given (a+1/a) 2 = 3 Therefore (a + 1/a) = √3 Recall the formula, (a3 + b3) = (a + b)3 - 3ab(a + b) Therefore,

(a3 + 1/a3) = (a + 1/a)3 - 3 x a x 1/a (a + 1/a)

= (√3)3 - 3(√3) = 3√3 - 3(√3 = 0

hence proved ....

Answer 2

Answer:

which class's ques is this?