How do you do this problem (without a calculator) that looks deceivingly simple, yet is utterly confusing. (2 ^ 30 - 2 ^ 29)/2 = ?. The answer is(adsbygoogle = window.adsbygoogle || []).push({});

2 ^ 28, but how was this done without using a calculator. The furthest I can take this without using a calculator is 2 ^ 29 - 2 ^ 28

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# Subtracting Exponents with Same Base but Different Exponent

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