Video: Dab tsi yog polynomial identities?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Polynomial cov cim yog qhov sib npaug uas muaj tseeb rau txhua qhov ua tau ntawm qhov sib txawv. Piv txwv li, x²+2x+1=(x+1)² is an tus kheej . Qhov kev taw qhia video no muab piv txwv ntau ntawm tus kheej thiab tham txog yuav ua li cas peb ua pov thawj qhov sib npaug yog ib qho tus kheej.
Yog li ntawd, dab tsi yog tus kheej siv tau?
Yog tias qhov sib npaug muaj ib lossis ntau qhov sib txawv thiab yog siv tau rau tag nrho cov txiaj ntsig hloov pauv ntawm qhov hloov pauv uas ob sab ntawm qhov sib npaug tau txhais, ces qhov sib npaug yog hu ua ib qho tus kheej . Qhov sib npaug x 2 + 2 x = x(x + 2), piv txwv li, yog ib tus kheej vim yog siv tau rau tag nrho cov nqi hloov ntawm x.
Tom qab ntawd, lo lus nug yog, polynomial formula yog dab tsi? Polynomial Equations Formula Feem ntau, cov polynomial equation yog qhia nyob rau hauv daim ntawv ntawm a (x). Piv txwv ntawm a polynomial equation ua:2x2 3x + 1 = 0, 2 x2 + 3x + 1 yog qhov pib a polynomial nthuav qhia uas tau teem sib npaug zos rau xoom, tsim a polynomial equation.
Tsis tas li ntawd, algebraic identities yog dab tsi?
Ib algebraic tus kheej yog qhov sib npaug uas tuav rau txhua qhov txiaj ntsig ntawm nws qhov sib txawv. Piv txwv li, lub tus kheej (x + y) 2 = x 2 + 2 xy + y 2 (x + y)^2 = x^2 + 2xy + y^2 (x + y)2 = x2 + 2xy + y2 tuav rau tag nrho cov nqi ntawm x thiab y.
Yuav ua li cas koj txheeb xyuas tus kheej algebraic?
Algebraic tus kheej (a+b)2 = a2 + 2 ab + b2 tau txheeb xyuas. Cov tus kheej (a+b)2 = a2 + 2 ab + b2 raug txheeb xyuas los ntawm kev txiav thiab pasting ntawm daim ntawv. Qhov no tus kheej tuaj yeem txheeb xyuas geometrically los ntawm kev noj lwm cov txiaj ntsig ntawm a thiab b.
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