47 ÷ 164 x √16= ?
1/16
1/4
4
1
Givenexpression=47164×√16=47(42)4×4=4848=4(8−8)=40=1.
Question 20
−16÷4 is not same as (a) (−4)÷16 (b) −(16÷4) (c) 16÷(−4) (d) -4
[{(−12)2}−2]−1=?
(a)116
(b)16
(c)−116
(d-16)
If x=1x−4 , find x−1x