Question

A) 7elevado a -2
B) 6elevado a -1
C) 3elevado a -5
D) 12elevado a -1
E) 3sobre4elevado a -2

Answer 1

a) $7^-^2=\dfrac{1}{7^2}=\dfrac{1}{49}$

b) $6^-^1=\dfrac{1}{6}$

c) $3^-^5=\dfrac{1}{3^5}=\dfrac{1}{243}$

d) $12^-^1=\dfrac{1}{12}$

e) $(\dfrac{3}{4})^-^2 = (\dfrac{4}{3})^2=\dfrac{16}{9}$

Answer 2

$oi \\ \\ \\ a) {7}^{ - 2} = {( \frac{1}{7} )}^{2} = \frac{1}{49 } \\ \\ \\ b) {6}^{ - 1} = { (\frac{1}{6} )}^{1} = \frac{1}{6 } \\ \\ \\ c) {3}^{ - 5} = {( \frac{1}{3}) }^{5} = \frac{1}{243} \\ \\ \\ d) {12}^{ - 1} = {( \frac{1}{12} )}^{1} = \frac{1}{12} \\ \\ \\ e) {( \frac{3}{4} )}^{ - 2} = { (\frac{4}{3}) }^{2} = \frac{16}{9}$

Espero ter ajudado. :D