Solve :
(2-√3) (2+√3)
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(2-√3) (2+√3)
(2+√3) (2-√3) ………(1)
Formula is a^2-b^2=(a+b) (a-b)….. (2)
Comparing in eq. (1) and eq(2)
a=2, b=√3
So that
a²-b²= (2)²-(√3)²
=4–3=1
So ans is 1
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