y' = 3*x²/3 + 2x - 3 = x² + 2x - 3
A) x² + 1,5x - 10 = 0
б) x² - 6x + 7 = 0
4(4с-3)-(10с+8)=16с-12-10с-8=6с-20 при с= 5/6, получим
6*5/6-20=5-20=-15.
Ответ:-15
удачи!!!
X = m * 10^-3, y = n * 10^2, m и n — целые числа;
1) xy = (m * 10^−3) * (n * 10^2) = mn * 10^−1,
p = −1;
2) 100x + y = 100(m * 10^−3) + n * 10^2 = m * 10^−1 + n * 10^2 =
(1000n + m) * 10^−1,
p = <span>−</span>1.
Ответ: 1)−1; 2)−1.