Question

if 3by 8 power minus 5 multiply by 16 by 21 power minus 5 is equal to 2 by 7 power x find x ki power 2​

Answer 1

Step-by-step explanation:

${( \frac{3}{8})}^{ - 5} \times (\frac{16}{21} )^{ - 5} = {\frac{2}{7}}^{x} = > (\frac{3 \times 16}{8 \times 21} )^ { - 5} =$

$\frac{2}{7}^{x} = > {( \frac{2}{7})}^{ - 5} = \frac{2}{7}^{x} = > x = - 5$

So x^2 is equal to 25. Hope it helps you.