x^+6x+9 kreska ułamkowa 2x^-8 razy xdo 3 -2x^kreska ułamkowa x^+3x=
x²+6x+9 x³-2x² (x+3)² x²(x-2)
---------*--------=--------- ----* ---------- =
2x²-8 x²+3x 2(x-2)(x+2) x(x+3)
skracam x+3 (na krzyż)
x-2 (na krzyż)
x w 2 ulamku
zostaje:
x+3 x x+3
------ * -------=---------
2(x+2) 1 2x+4
zał:
2x²-8≠0 ∨ x²+3x≠0
x≠±2 x(x+3)≠0
x≠0 ∨ x≠-3
x∈R\{-3,-2,0,2}
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x²+6x+9 x³-2x² (x+3)² x²(x-2)
---------*--------=--------- ----* ---------- =
2x²-8 x²+3x 2(x-2)(x+2) x(x+3)
skracam x+3 (na krzyż)
x-2 (na krzyż)
x w 2 ulamku
zostaje:
x+3 x x+3
------ * -------=---------
2(x+2) 1 2x+4
zał:
2x²-8≠0 ∨ x²+3x≠0
x≠±2 x(x+3)≠0
x≠0 ∨ x≠-3
x∈R\{-3,-2,0,2}