Question

7 elevado -4 . 7 elevado -3 : 7 elevado -6

Answer 1

$7^{-4} = \frac{1}{7^4} = \frac{1}{2401}$

$7^{-3} = \frac{1}{7^3} = \frac{1}{343}$

$7^{-6} = \frac{1}{7^6} = \frac{1}{117649}$

Answer 2

$7 {}^{ - 4} \times 7 {}^{ - 3} \div 7 {}^{ - 6} =$

$7 {}^{ - 4 - 3 + 6} =$

$7 {}^{ - 7 + 6} =$

$\boxed{7 {}^{ - 1} }$

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Att, IzabelaCristina2006 ❤️ ♈