Question

a^2 + a^-² = ?

What is 'a' power '2' + 'a' power 'minus 2'? With reason.​

Answer 1

Answer:

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Step-by-step explanation:

a^2 + a^-2 = a^2 + 1/a^2 = [using cross multiplication] a^4/a^2 = [canceling a^2 in numerator and denominator] a^2

Answer 2

Answer:

The answer is a²+1/a².

Step-by-step explanation:

a^m multiplied by a^n= a^m+n

a^m+a^n=a^m+a^n

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