Convert the given surds (2+√3)(2−√3) into its simplest form.
A
√3
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B
1
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C
4
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D
2√3
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Solution
The correct option is D1 Using distributive property a(b+c)=a.b+a.c, we have (2+√3)(2−√3) =2(2−√3)+√3(2−√3)=2.2−2.√3+√3.2−√3.√3=4−2√3+2√3−3=4−3=1 Hence, option B is correct.