1
-2X+6-18=6X+20
-4
4
-8
8
2
(X-5)²=9
X'=-2√2+5, X''=2√2+5
X'=2, X''=8
3
3X²+6X=0
X'=0, X''=-6
X'=0, X''=0
X'=6, X"=0
X'=0, X''=2
4
4+5.3-(2.6).|5+(-3):3.(4-4+4.4:8)|+1
17
-17
16
-16
5
-X²-4X-5=0
X ∉ R
X'=-1, X"=5
€-6+76/
6
4(5X+2)/8 + 6X-4/4
-4X
13X+2/6
4X
