Calculati
[tex](3 {}^{2} \times 3 { }^{ - 3} ) { {}^{ - 1} } [/tex]
[tex](7 {}^{ - 1} ) {}^{4} \times (7 {}^{ - 2} ) {}^{ - 2} [/tex]
[tex] \frac{4 {}^{3} \times 4 {}^{ - 5} }{4 {}^{ - 4} } [/tex]
[tex]32 \times 2 {}^{ - 6} [/tex]
[tex] \frac{5 {}^{ - 3} \times 5 {}^{5} }{5 {}^{2} \times 3 } [/tex]
[tex]49 \times (7 {}^{ - 2} ) {}^{2} [/tex]
​