Question

(√2 - 3)² = ________
a) 11 - 3√2
b) 13 - 6√2
c) 13 - 3√2
d) 11 - 6√2
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Answer 1

using (a-b) whole square formula

a square - 2 a b + b square

d is the answer

Answer 2

(√2-3)squar

(√2)squar - 2 x √2 x 3 + (3)squar

2-6√2+9

11-6√2

The answer is (d) 11-6√2