Question

Plese solve question 9 and 10

Answer 1

Step-by-step explanation:

It is simple

9. (i)13 (ii)5 (iiii)1

Answer 2

Step-by-step explanation:

9 ( i)

( x³ + 1 / x³ )

= ( x + 1/ x) ³ - 3 . x. 1 /x ( x + 1/x)

= 4³ - 3 * 4

= 64 - 12

= 52 answer

For íí and ííí

substitute the value of x³ + 1/ x³ in the formula ,

10 )

( a² + 1/a² ) = ( a + 1 / a)² - 2 . a .1 /a

or, 23 +2 = ( a + 1 / a)²

or, 25 = ( a + 1 / a)²

: ( a + 1 / a) = √25

= 5 answer

Now, do all by both way...thanks

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