<span>рх^2-2х+9=0
D=4-36p>0
4-36p>0
p<1/9
p<>0</span>
M²n + mn + n = n(m² + m + 1)
3x⁶ + 6x⁵ - 15x⁴ = 3x⁴(x² + 2x - 5)
<span>7a⁴b³ - 14a³b⁴ + 21a²b⁵ = 7a</span>²b³ (a² - 2ab + 3b²<span>)
</span><span>20b⁶c⁵ - 45b⁵c⁶ - 30b⁵c⁵ = 5b</span>⁵c⁵(4b - 9c - 6)
1. -5x+8
2. -3x^2+2
3. 4a
4. -2b^2-5ab
5. x+y