10 Calculați:
a 1
b x-
d
e
2x-3) 3x+1, X x-5;
+
3x+1, 15 75
2x
x² -4 2x+1
2x+1 X-2
3
1
5+2x x-1,
+ [(x-
(x−1)(5x+3)
4x+7
2
3
X-2 X+3.
1
4x
2x² -7 3x²-7)
4x+10 9-x² 3+x
4x+7 4x+7
5x+2
+
3x² -7
X+6
5x(x+3)
12-X
+
(4x+7)³
(x−1) (5x+3)
;
4x²-49,2x+7.
x²-36 x-6
+
8
81
x-2 X²-4 9
;
x+2
;