JonnStrack JonnStrack

22-01-2016
Mathematics

contestada

two to the negative first plus two to the negative first

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apologiabiology apologiabiology

05-02-2016

negative exponents mean reciprocals
so
one law of exponents is
[tex] x^{-m} [/tex]=[tex] \frac{1}{ x^{m} } [/tex]
so
(2^-1)=1/(2^1)=1/2
there are 2 so we add
(2^-1)+(2^-1)=1/2+1/2=1
answer is 1

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