(х + 2)(х - 9) - 3х(3 - 2х) =
= х² + 2х - 9х - 18 - 9х + 6х² =
= 7х² - 16х - 18
X⁴-10x³+35x²-50x+24=0
x₁=1
x⁴-10x³+35x²-50x+24 |_x-1
x⁴-x³ | x³-9x²+26x-24
-------
-9x³+35x²
-9x³+9x²
-------------
26x²-50x
26x²-26x
------------
-24x+24
-24x+24
-----------
0
x³-9x²+26x-24=0
x₂=2
x³-9x²+26x-24 |_x-2
x³-2x² | x²-7x+12
--------
-7x²+26x
-7x²+14x
------------
12x-24
12x-24
---------
0
x²-7x+12=0 D=1
x³=3 x₄=4
Ответ: x₁=1 x₂=2 x₃=3 x₄=4.
===========================================
Lgx=1
x=10
lg(0,027)x=2/3
x=∛(0,027)²=0,3²=0,09
lgx=-4
x=0,0001
lg(0,25)x=3/2
x=√(0,25)³=0,5³=0,125
log(4)x=-1/2
x=12
log(0,125)x=-2/3
x=∛8²=2²=4
log(32)x=-4/5
x=1/16
log(0,01)x=-3/2
x=√100³=10³=1000