38313328
Description
Quiz by Flavia Duta, updated more than 1 year ago
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Created by Flavia Duta
over 1 year ago
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Question 1
Question
Dintre numerele \[a = 2022^2-4^2 \hspace{1em} si \hspace{1em} b=2021^2-3^2\] mai mare este numarul a.
Answer
- True
- False
Question 2
Question
Descompunerea in factori a expresiei \[E(x,y)=x^2+2x\sqrt{2}+2\] este:
Answer
-
\[(x+2)^2\]
-
\[(2x+1)^2\]
-
\[(x+\sqrt{2})^2\]
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\[(x+\frac{1}{\sqrt{2}})^2\]
Question 3
Question
Expresia algebrica \[x^2+8x+16\] se poate descompune cu:
Answer
-
patratul sumei
-
patratul diferentei
-
diferenta de patrate
Question 4
Question
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.
Answer
-
34
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17
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13
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30
-
10
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12
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5
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12
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5
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10
Question 5
Question
\( x^2-6x-7 = [blank_start](x+1)(x-7)[blank_end] \)
\( x^2+2x-15 = [blank_start](x-3)(x+5)[blank_end] \)
\( x^2-x-20 = [blank_start](x+4)(x-5)[blank_end] \)
\( x^2-x-42 = [blank_start](x+6)(x-7)[blank_end] \)
Answer
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(x+1)(x-7)
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(x-3)(x+5)
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(x+4)(x-5)
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(x+6)(x-7)
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