Działania na wyrażeniach wymiernych
3x — 1 x + 5 2(3x — 1) x+ 5 6x — 2 + x + 5 7x + 3
a)--1—z— =-z--h
x
x — 1
2x
2x + 3
2x
x — 1
2x 2x
(x - 2) (2% + 3)
2x
D = R/{ 0}
x2 — 4 x + 2 (x — 2)(x + 2) (x — 2)(x + 2) x — 1 - 2x2 — 3x + Ax + 6 — 2x2 + 2x + 5
(x - 2)(x + 2)
Cx - 2)(x + 2)
D = R/{—2,2}
I2x x2 -9 3 (x - 3)(x + 3) 3(x - 3)
x + 3 20x3 x + 3 Sx2 5x2
4x2-9 x-5 (2x-3)(2x + 3) x — 5 2x-3
D = R/{-3,0}
2x - 10 2x + 3
2(x - 5) 2x + 3
D = R/
x2 + 6x + 9 x + 3 (x + 3)2 35x (x + 3) • 7 7(x + 3)
25x4
35x
25x4 x + 3
Sx 3
5x3
D = fl/{-3,0)