Question

(5/7)^-2 × (5/7)^4 ÷ (5/7)^3
please give me perfect answer ​

Answer 1

Enjoy brother

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Answer 2

Answer:

$\frac{7}{5} ^{1}$

Step-by-step explanation:

$(\frac{5}{7} )^{-2}$$(\frac{5}{7} )^{4}$÷$(\frac{5}{7} )^{3}$

$=(\frac{5}{7} )^{-2} X (\frac{5}{7} )^{4-3} ( x^{b}$÷$x^{a} = x^{b-a}$$)$

$=(\frac{5}{7} )^{-2} X (\frac{5}{7} )^{1}$

$= (\frac{5}{7} )^{-2+1}$     $(x^{a}$×$x^{b} = x^{ab} )$

$=\frac{5}{7} ^{-1}$

$=\frac{7}{5} ^{1} (\frac{a}{b} ^{-1} = \frac{b}{a} ^{1} )$