Question

Which of the following expressions would be true for an integer ‘x’ greater than 1, whose square root and cube root are integers a and b respectively?
A. x2 = x3
B. (a2)3 = (b3)3
C. x is a perfect square.
D. a is a perfect square. 




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Answer 1

Answer:

a is the best answer Mark

Answer 2

Now take any x > 0 and set p = x, q = 1, r = s = √x to obtain ... We show that actually these two functions are ... Likewise, if f(ab)=1/ab then (3) gives a2b2(a−2 + b2) = a2 + b2, whence b