Question

Express as a rational number with negative exponent


$1. \: {( - 2)}^{ - 6} \times {( - 2)}^{ - 5}$
$2. \: {( \frac{ - 5}{11} )}^{ - 21} \times {( \frac{ - 5}{11}})^{16}$
$3. \: ({ \frac{ - 5}{6} })^{ - 17} \div ({ \frac{ - 5}{ 6} })^{ - 11}$
Answer by solving

Answer 1

1. (2)^(-11)              (adding up powers)

2. (-5/11)^(-5)                (adding up powers)

3. (-5/6)^(-6)               (subtracting powers)