QUIZ
Descompuneri in factori(cu formule de calcul prescurtat) -PH
4 months ago by
16 questions
Q.

Descompunand 4x2+12x+9 veti obtine:

answer choices

(2x+1)2

(3x+1)2

(2x+3)2

(2x+3(2x-3)

Q.

Descompunad 25x2-40x+16 veti obtine:

answer choices

(5x-8)2

(5x-4)2

(5x-2)2

(5x-4)(5x+4)

Q.

Restrângeți x2+8x+16x^2+8x+16   

answer choices

 (x+4)2\left(x+4\right)^2  

 (x+8)2\left(x+8\right)^2  

 (x+2)2\left(x+2\right)^2  

 (x+16)2\left(x+16\right)^2  

Q.

Restrângeți 4x2+12x+94x^2+12x+9   

answer choices

 (2x+3)2\left(2x+3\right)^2  

 (4x+3)2\left(4x+3\right)^2  

 (2x+6)2\left(2x+6\right)^2  

 (2x+9)2\left(2x+9\right)^2  

Q.

Descompunand x2 + 12x + 36 veti obtine: 

answer choices

(x + 12)2

(x - 6)2

(x + 6)2

(x+6)(x6)\left(x+6\right)\left(x-6\right)

Q.

 Descompuneti 16a225b2Descompuneti\ 16a^2-25b^2  

answer choices

(4a +5b)(4a - 5b)

(5a - 4b)(5a + 4b)

(16a - 25b)(16a +25b)

 (4a+5b)2\left(4a+5b\right)^2  

Q.

 Descompunand   81x249  veti obtine: Descompunand\ \ \ 81x^2-49\ \ veti\ obtine:\   

answer choices

(9x-7)(9x+7)

(3x+7)(3x-7)

(9x+8)(9x-8)

 (9x7)2\left(9x-7\right)^2  

Q.

 Descompuneti 7a25Descompuneti\ 7a^2-5  

answer choices

 (7a5)(7a+5)\left(7a-5\right)\left(7a+5\right)  

 (7a5)2\left(\sqrt{7}a-\sqrt{5}\right)^2  

 (7a5)(7a +5)\left(\sqrt{7}a-\sqrt{5}\right)\left(\sqrt{7}a\ +\sqrt{5}\right)  

 (7a5)(7a+5)\left(\sqrt{7}a-5\right)\left(\sqrt{7}a+5\right)  

Q.

 3x223+1=3x^2-2\sqrt{3}+1=  

answer choices

 (3x1)2\left(3x-1\right)^2  

 (3x1)2\left(\sqrt{3}x-1\right)^2  

 (3x +1)2\left(\sqrt{3}x\ +1\right)^2  

 (3x1)2\left(3x-1\right)^2  

Q.

 x22+1x2x^2-2+\frac{1}{x^2}  

answer choices

 (x1x)2\left(x-\frac{1}{x}\right)^2  

 (x+1x)2\left(x+\frac{1}{x}\right)^2  

 (x+1x)(x1x)\left(x+\frac{1}{x}\right)\left(x-\frac{1}{x}\right)  

 (x2)2\left(x-\sqrt{2}\right)^2  

Q.

 254x2+5x+1\frac{25}{4}x^2+5x+1  

answer choices

 (54x+1)2\left(\frac{5}{4}x^{ }+1\right)^2  

 (52x+1)2\left(\frac{5}{2}x+1\right)^2  

 (5x+1)2\left(5x+1\right)^2  

 (52x1)2\left(\frac{5}{2}x^{ }-1\right)^2  

Q.

(x+4)2-25 este egal cu

answer choices

(x+2)(x+5)

(x-1)(x+9)

(x-9)(x+1)

(x1)2\left(x-1\right)^2

Q.

(2x-5)2-(x+6)2 este egal cu

answer choices

(x+5)(3x+3)

(x-11)(3x+1)

(3x+1)(x+5)

(3x+1)2\left(3x+1\right)^2

Q.

 9(x+2)24(x+3)29(x+2)^2-4(x+3)^2  

answer choices

 x(5x+12)x\left(5x+12\right)  

 (5x6)(13x+30)\left(5x-6\right)\left(13x+30\right)  

 (5x+12)2\left(5x+12\right)^2  

 (3x+6)(2x+6)\left(3x+6\right)\left(2x+6\right)  

Q.

 Descompunand 1062942 Descompunand\ 106^2-94^2\   folosind formulele de calcul prescurtat veti obtine: 

answer choices

1200

2400

12000

4800

Q.

 Descompunand 1052210595 +952Descompunand\ 105^2-2\cdot105\cdot95\ +95^2  folosind formulele de calcul prescurtat veti obtine:


answer choices

40000

2000

25

100

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