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Which of the following is NOT a binomial expression?
Option: 1
$\left ( x+y \right )^{-5}$

Option: 2
$\left ( x-y \right )^7$

Option: 3
$\left ( a+b \right )^{\frac{-8}{5}}$

Option: 4
$\left ( 3a+b \right )^i$

Answers (1)

best_answer

We can not have complex numbers in exponents.

Only, positive, negative integers and rational numbers are allowed.

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Rishabh

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