Question

помогите пожалуйста

Answer 1

$frac{c^{13}}{b^{ frac{12}{4} }*c^{ frac{5*12}{6} }}= frac{c^{13}}{b^3*c^{10}} = frac{c^3}{b^3}= (frac{c}{b})^3= (frac{15}{5} )^3=3^3=27$

Answer 2

1) ( B^1/4 * C^5/6) ^12 = B^3 * C^10
2) C^13 : ( B^3 * C^10) = C^3 / B^3 = ( C/B)^3 
---------------------------------------------------
B = 5 ; C = 15 
( 15/5)^3 = 3 ^3 = 27