Срочно!
#1
Решите уравнения
1. 2(2/3)^3х-6=(4/9)^х+3 *3
2. 5(2.5)^2х+1=2*(125/8)^х-2
#2
Найдите значение выражения
2а(а^2+b^2)-a(a-b^2)+a(b+a)^2-2a^3
при а=-3/2, b=-0.25
#3
Найдите координаты точки пересечения у=0.5х+(-8) и 2х+у=2
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