Descompunere in factori

Beschreibung

Descompunere in factori folosind factor comun si formule de calcul prescurtat
Flavia Duta
Quiz von Flavia Duta, aktualisiert more than 1 year ago
Flavia Duta
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4
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Zusammenfassung der Ressource

Frage 1

Frage
Dintre numerele \[a = 2022^2-4^2 \hspace{1em} si \hspace{1em} b=2021^2-3^2\] mai mare este numarul a.
Antworten
  • True
  • False

Frage 2

Frage
Descompunerea in factori a expresiei \[E(x,y)=x^2+2x\sqrt{2}+2\] este:
Antworten
  • \[(x+2)^2\]
  • \[(2x+1)^2\]
  • \[(x+\sqrt{2})^2\]
  • \[(x+\frac{1}{\sqrt{2}})^2\]

Frage 3

Frage
Expresia algebrica \[x^2+8x+16\] se poate descompune cu:
Antworten
  • patratul sumei
  • patratul diferentei
  • diferenta de patrate

Frage 4

Frage
Un dreptughi are diagonala de 13cm si aria egala cu 60cm^2. Perimetrul dreptunghiului este [blank_start]34[blank_end] cm si lungimile laturilor sunt x = [blank_start]12[blank_end]cm, respectiv y=[blank_start]5[blank_end]cm.
Antworten
  • 34
  • 17
  • 13
  • 30
  • 10
  • 12
  • 5
  • 12
  • 5
  • 10

Frage 5

Frage
\( x^2-6x-7 = [blank_start](x+1)(x-7)[blank_end] \) \( x^2+2x-15 = [blank_start](x-3)(x+5)[blank_end] \) \( x^2-x-20 = [blank_start](x+4)(x-5)[blank_end] \) \( x^2-x-42 = [blank_start](x+6)(x-7)[blank_end] \)
Antworten
  • (x+1)(x-7)
  • (x-3)(x+5)
  • (x+4)(x-5)
  • (x+6)(x-7)
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