Question

Simplify : (√5 − √4)²

Options:

1-2√20

9+2√10

-9+2√10

9-2√20​

Answer 1

(√5-√4) 2

formula : (a-b) 2 = a2 + b2 - 2ab

(√5) 2 + (√4) 2 - 2×√5×√4

5+4-2√20

9-2√20

your answer

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