Simplify (-2 - √3) (-2 + √3) Experts pls dont give a link as the query.

   -2-3-2+3=-22 - 32=4 - 3=1

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1 is the answer
 
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by using the identity a2-b2 = (a+b)(a-b)
​ANSWER IS= -2square+ root 3 square
                     =2+3
                     =5
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(-2)²-(√3)²
=4-3=1
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after simplifing
4-3=1
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