Question

Simplify (2^-3 - 2^-4) (2^-3 + 2^-4)​

Answer 1

Answer:

(2-³ - 2-⁴) (2-³ + 2-⁴)

=(2-³)²-(2-⁴)²

{.: (a-b) (a+b) = a²-b²}

=2⁶-2-⁸ =1/2⁶ -1/2⁸

=1/64 -1/256

=4-1/256

=3/256