Question

СРОЧНО!!!!!!!!!!ПЛИЗ

Answer 1

$frac{(2a^3)^5(2a^2)^4}{(4a^7)^3}=frac{2^5*2^4*a^{15}*a^8}{2^6*a^{21}}=2^3*a^2\a=-0,5\2^3*(-0,5)^2=8*0.25=2\A$