73
53
52
32
Correct answer is B
(√2+1√3)(√2−1√3)
√4−√2√3+√2√3−1√9
= 2 - 13
= 16−13
= 53
A notebook of length 15 cm was measured to be 16.8 cm, calculate, correct to two d.p, the ...
The variance of a given distribution is 25. What is the standard deviation? ...
Calculate the standard deviation of the following data: 7, 8, 9, 10, 11, 12, 13. ...
A binary operation ⊕ on real numbers is defined by x⊕y = xy + x + y for any two real numbers x a...
Find the value of k if y - 1 is a factor of y3 + 4y2 + ky - 6...
A rectangular picture 6cm by 8cm is enclosed by a frame 12cm wide. Calculate the area o...
In the diagram, O is the centre, ¯RT is a diameter, < PQT = 33o and <TOS = 76\(^...