παραγοντοποίηση

παραγοντοποίηση

10th Grade

20 Qs

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παραγοντοποίηση

παραγοντοποίηση

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Medium

Created by

giannis xantzis

Used 6+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Είναι αλήθεια ότι

(a + b)2 = a2 + b2 + 2ab ;

Ν Α Ι

Ο Χ Ι

Answer explanation

Στην πρόσθεση, δεν παίζει ρόλο η σειρά.

Οπότε α2 + 2ab + b2 είναι ίδιο με το a2 + b2 + 2ab.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Είναι αλήθεια ότι

(-α - b)2 = (a + b)2 ;

Ν Α Ι

Ο Χ Ι

Answer explanation

Είπαμε ότι

(α + b)2 = a2 + 2ab + b2

και (-a - b)2 = a2 + 2ab + b2 .

Άρα είναι ίδια

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

x2 - 6x + 9 = . . .

(x + 3)2

(x - 3)2

(3x - 1)2

Answer explanation

x2 - 6x + 9 =

= x2 - 2 . x . 3 + 32 =

= (x - 3)2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

25x2 - 10x + 1 = . . .

(x - 5)2

(5x + 1)2

(5x - 1)2

Answer explanation

25x2 - 10x + 1 =

= (5x)2 - 2 . 5x . 1 + 12 =

= (5x - 1)2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Είναι αλήθεια ότι α2 - β2 = (α + β) . (α - β) ;

Ν Α Ι

Ο Χ Ι

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

x2 - 9 = (x - 3) . (x + 3)

Σ Ω Σ Τ Ο

Λ Α Θ Ο Σ

Answer explanation

Το (x - 3) . (x + 3) είναι ίδιο με

το (x + 3) . (x - 3) , γιατί στον

πολλαπλασιασμό δεν παίζει ρόλο η σειρά.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

4x2 - 9 = . . .

(4x + 9) . (4x - 9)

(4x + 3) . (4x - 3)

(2x + 3) . (2x - 3)

Answer explanation

4x2 - 9 =

= (2x)2 - (3)2 =

= (2x + 3) . (2x - 3)

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