Question

y = + x^{2 +} x^-1 and x is a positive number.

a Write y as a mixed number when

i x = 1 ii x = 2 iii x = 3

Answer 1

$$y=x^2+x^{-1}$$

a.

i. $x=1$

$$y=1^2+1^{-1}=2$$

ii. $x=2$

$$y=2^2+2^{-1}=4\dfrac{1}{2}$$

iii. $x=3$

$$y=3^2+3^{-1}=9\dfrac{1}{3}$$