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Question
Simplify:
`(2^-3-2^-4)(2^-3+2^-4)`
Sum
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Solution
`(2^-3-2^-4)(2^-3+2^-4)`
= `(1/2^3-1/2^4)(1/2^3+1/2^4)`
= `(1/8-1/16)(1/8+1/16)`
= `((2-1)/16)((2+1)/16)`
= `1/16xx3/16`
= `3/256`
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