Question

(-3 supra 4√21):(-6supra5√7)

Answer 1

Salut!

$\frac{-3}{4 \sqrt{21} } :( \frac{-6}{5 \sqrt{7} } )= \frac{5}{8 \sqrt{3} } = \frac{5 \sqrt{3} }{24}$

Answer 2

(- 3/4√21) : (- 6/5√7) = 
(- 3/4√3 * √7) * (- 5√7/6) =
 5/8√3