Question

using identies evaluate x⁴-1/x²​

Answer 1

Answer:

= x⁴-1/ x²

= x² x x² -1 / x²

= x² -1 Ans .

Answer 2

Answer:

-1,1

Explanation:

take 1/x^2 common we get equation as

$\frac{1}{ {x}^{2} } ( {x}^{2} - 1) = 0$

therefore x values would be

${x}^{2} = 1$

this results x=+1,-1