Tính

X
5.xy-³
X
4xy
x+2y 4y²-x²
+
x-2
100
5-x x²-25
2x+5 2x²+x+3
4x-3
3.x-4x²
+
y x+4y
12
1
-1 x-x²
-
x³ + 2x
x³ -1
e)
h).
x+1 1-x
x-3 x+3
xy-y² x²-xy
6
12
7
x-2 x(x-2) x
-3
P)-
x
2x.(1-x)
9-x²
-
5
5x
+
x+3 x² + 3x
x_x² + y²
y
xy
P
i) x-3
m)
1
2.x-2y 2x+2_
u)
+
x+3 x-3
x-3 x+3
1-3x
2x
X
+
x-3 x²
f
+
3x-2
2x-4x²
3
x+ 2 x-27
6
3x+2
3.x-
¹x²-2x+1x²-1 ²+2