А) = 5·2·3·а·а·а = 30·а³
= 0,1·6·(-1)·b·b·b = -0.6·b³
= -1·(-1)·(-2)·a·a·a = -2·a³
б) = 3·2·(-5)·x·y·y = -30·x·y²
= -a²·x³
= 5·b³·
-2pi/3*pi/2=-4pi/6*3pi/6=-12pi/6
<span>(1-2c)^2 - 4c(c+1)= 1 - 4с +4с</span>² - 4с² - 4 = -3 - 4с = -3 -4*(-1/4) = -3 +1 = -2
= 49x^2 - 169 - 49x^2 + 6x + 22 = 6x - 147
X = 80 ; 6•80 - 147 = 333