Question

Simplify :-
(5 − 2√3)
^2​

Answer 1

$37 - 20 \sqrt{3}$

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Answer 2

Answer:

Step-by-step explanation:

Using the formula for (a-b)²...............

(a-b)²=a²+b²-2ab

Here a=5

         b=2√3

a²=5²=5×5=25

b²=(2√3)²

  we can write  (2√3)² as 2²×√3²

 ∵2²×√3²=4×√(3×3)

                 =4×√9

                 =4×3

                 =12

Now let's apply the formula mentioned above (a-b)²=a²+b²-2ab

25+12-2×5×2√3

37-10√3