Question

express with positive exponents. 3 to the power 4 into 3 to the power -7​

Answer 1

$</p><p> \sf \rightarrow \quad {3}^{4} \times {3}^{ - 7} \\ \\ \sf \rightarrow \quad {3}^{4 + ( - 7)} \\ \\ \sf \quad {a}^{m} \times {a}^{n} = {a}^{ m+n } \\ \\ \sf \rightarrow \quad {3}^{ -3} \\ \\ \sf \rightarrow \quad \frac{1}{27} </p><p>$

Answer 2

Answer:

3^4× 3^(-7) .....

this can also be written as..= 3^4×1/3^7 [ we will move the numerator in denominator to remove - sign....

next,just solve....

3^4/3^7...

(final answer is)= 81/2187

=0.037