CALCUL ALGEBRIC

Simplificând fracția (x^2-10x+25)/(x^2-25) obținem:

(𝑥+5)/(𝑥−5)

Corect Incorect Correct answer

(x−5)/(x+5)

Corect Incorect Correct answer

(𝑥−25)/(𝑥+5)

Corect Incorect Correct answer

25

Corect Incorect Correct answer

Valoarea fracției (x+4)/(2x+3) în punctul x=1 este:

1

Corect Incorect Correct answer

7

Corect Incorect Correct answer

1/2

Corect Incorect Correct answer

3/2

Corect Incorect Correct answer

Dacă x+1/x=5 , atunci x^2+1/x^2 este:

3

Corect Incorect Correct answer

27

Corect Incorect Correct answer

7

Corect Incorect Correct answer

23

Corect Incorect Correct answer

Dacă E(x)=((x-6)/(x^2-25)-x/(5-x)-2/(x+5)):(2x^2+x-6)/(x^2-25) atunci domeniul de existență al lui E(x) este:

{-5 ; -2 ; 3/2 ; 3}

Corect Incorect Correct answer

ℝ \ {-5 ; -2 ; 3/2 ; 5}

Corect Incorect Correct answer

ℝ \ {-5 ; 5}

Corect Incorect Correct answer

ℝ \ {5}

Corect Incorect Correct answer

Dacă E(x)=((x-6)/(x^2-25)-x/(5-x)-2/(x+5)):(2x^2+x-6)/(x^2-25) , atunci E(x) este:

(x+2)/(2x−3)

Corect Incorect Correct answer

(2𝑥−3)/(𝑥+2)

Corect Incorect Correct answer

(𝑥−2)/(2𝑥−3)

Corect Incorect Correct answer

(−𝑥−2)/(2𝑥−3)

Corect Incorect Correct answer

CALCUL ALGEBRIC

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