book Maths Puzzle Numerical Ability

How do you get the anwser to a square root... ex:
square root of:
132
67
83
if you can... could you give me the formula for solving a square root...

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book Other Question

Let f(x) =x^n + a(sub1)x^n-1 + a(sub2)x^n-2..........a(sub n-1)x+a(sub n) be a polynomial with integer coefficients. Suppose there are four distinct integers a,b,c and d such that f(a)=f(b)=f(c)=f(d)=8. Can there be an integer k such that f(k)=3. simplify the following algebraic expression

Multiply: (2s +5z)^2(s + 3z)^2