Question

please tell it's ans​

Answer 1

Answer:

(-3)⁵ x (-3)²

= (-243) x 9

= -2187

Answer 2

$3) \: \: \: \frac{ - 5}{7} \: \: and \: \: \frac{ - 3}{8}$

L.C.M of 7 and 8 is 56

$\frac{ - 5 \times 8 }{7 \times 8} = \frac{ - 40}{56} \\ \\ \frac{ - 3 \times 7}{8 \times 7} = \frac{ - 21}{56}$

So ,

$\frac{ - 40}{56} < \frac{ - 39}{56} < \frac{ - 38}{56} < \frac{ - 37}{56} < \frac{ - 36}{56} < \frac{ - 35}{56} < \frac{ - 34}{56} < \frac{ - 33}{56} ... \frac{ - 21}{56}$

( u can take any 5 all of them )

Hence , The five rational numbers between

$\frac{ - 5}{7} \: \: and \: \: \frac{ - 3}{8} \: \: \: \: is$

$\frac{ - 40}{56} < \frac{ - 39}{56} < \frac{ - 38}{56} < \frac{ - 37}{56} < \frac{ - 36}{56} < \frac{ - 39}{56} < \frac{ - 21}{56}$

______________________

$4) \: \: \: ( { - 3)}^{5} \times ({ - 3})^{2} \\ ( { - 3})^{5 + 2} \\ ({ - 3})^{7} \\ - 2187.$