5x³ - 125x = 0;
5x(x² - 25) = 0;
x(x - 5)(x + 5) = 0;
<span>x = {-5; 0; 5}.</span>
1.56÷1.3-0.4=1,2-0,4=0,8.
Ответ: 0,8.
4*a^3*b* 12*(ab^2)^3 * 3a =
= 4*a^3*b * 12a^3*b^6 * 3a =
= 4*12*3*a^3*a^3*a*b*b^6 =
= 144a^(3 + 3 + 1) * b^(1 + 6) =
= 144*a^7*b^7