2 7 1 4x 3 5 1. 4^X+1,5+2^X+2=4. (3-5x)4-15(3-5x)2. 17-2(X+3)+5(X+7)-3. 3(X-2)-5=4-(5x-1). X3 и x5. X-Y=1 x2-y2=7 система. 2x-7y=7 решение. Y=3x-9. -2x-7=-4x. 3x-4/7-4x-1/4>2. (1/4)^X -9*(1/2)^X>-8. 4x-3/x+1-6x-5/2x+1. 2x - 3x2 2 3x2 + 7x- 6 10 6 - 15x 2