Question

СРОЧНО!!!!!!!!!!ПЛИЗ

Answer 1

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