Question

Q.1 Find the square root of the following numbers by
repeated subtraction method
• (i) 9 (ii)121
• Q.2 Find the square root by prime factorisation (i) 64
(ii)289
• Q.3 Find the smallest number by which 147 must be
multiplied so that it becomes a perfect square.
Also, find the square root of the number so obtained​

Answer 1

answer:

Q.2 (i)

64= 2×2×2×2×2×2

making pairs

We get 2×2×2= 8

so 8 is the square root of 64