Multiply: (X-2-root3) (x-2+root3)
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(x-2 -√3)(x -2+√3)
[(x-2) -√3][(x-2)+√3]
applying (a+b)(a-b) =(a²-b²)
=[(x-2)² - (√3)²]
=(x² +4 - 4x -3)
=x² -4x +1
[(x-2) -√3][(x-2)+√3]
applying (a+b)(a-b) =(a²-b²)
=[(x-2)² - (√3)²]
=(x² +4 - 4x -3)
=x² -4x +1
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