4^3\4^(log_5(10)) *4^(log_5(2)) =4^3*4^(log_5(2\10))=4^3*4^(log_5(1\5))=4^3*4^)(log_5(5^(-1)) =4^3*4^(-1)=4^(3+(-1))=4^(2)=16
Y=(x+7)²*(x-6)+11
y=uv+11 y'=(uv)'+0
u=(x+7)² u'=2(x+7) v=x-6 v'=1
y'=(uv)'=u'v+v'u
y'=2(x+7)(x-6)+(x+7)²
13а+12=18а-3
18а-13а=-3-12
5а=-15
а=-3
ответ минус 3