Question

a=2+root3 find a-1/a​

Answer 1

Answer:

a - 1/a=2+√3 - 2+√3=2√3

Step-by-step explanation:

GIVEN a=2+√3

1/a=1/(2+√3)

=(2-√3)/{(2+√3)(2-√3)} [multiply with (2-√3) on both numerator and denominator)

=(2-√3)/(4-3)

=(2-√3)

a-1/a=2+√3-2+√3=2√3

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