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Dominika D.
matematika

Rozklad na súčin.

Vedel by mi niekto pomôcť ako sa rozkladajú tieto príklady na súčin?
Vopred ďakujem.

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Príklad a) sa ešte dá rozložiť druha zátvorka konkrétne podľa vzťahu A^3-B^3
Úplný rozklad by bol : (x-2).(2x-1).(4x^2+2x+1)

Príklad po c) stačilo použiť vzorec A^2-B^2.
Miroslav J.
Miroslav J. Contact
Ahoj, Dominika!
Ak niečomu nerozumieš, spokojne ma kontaktuj.
Spp Miro
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Milan M.
po c) stačilo použiť vzorec a2 - b2 = (a + b).(a - b). Nie determinant, ale diskriminant. a vo výsledku treba odstrániť zlomky 15 = 5.3 Prvú zátvorku násobiť 5 a druhú 3. Výsledok bude (5x - 1).(3x + 1)
Milan M.
po c) stačilo použiť vzorec a2 - b2 = (a + b).(a - b). Nie determinant, ale diskriminant. a vo výsledku treba odstrániť zlomky 15 = 5.3 Prvú zátvorku násobiť 5 a druhú 3. Výsledok bude (5x - 1).(3x + 1)
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