prove that 2+√7 is irrational number
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Let 2 + V7 is rational number and it can be denoted in the form of p / q where q is equal not to 0 , and p, q are co prime number.
=> 2 + V 7 = p / q
=> V 7 = p / q - 2
=> V 7 = p - 2q / q
It contradict our assumption, 2 + V 7 is rational number..
We know the fact that V 7 is irrational number.
Therefore , 2 + V 7 is irrational number.
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