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- Multiple ChoicePlease save your changes before editing any questions.
Rezultatul calcului (-2x2)3 este
6x6
-6x
-8x6
8x
- Multiple ChoicePlease save your changes before editing any questions.
Fie expresia E(x)=2x2 – 5 – 3x + 7 – x2 + 2x valoarea expresiei E(0) este
x2 - x + 2
2
1
nu exista
- Multiple ChoicePlease save your changes before editing any questions.
Rezultatul calculului 3x∙(2x – 3) este
5x2 + 9x
5x2 - 9x
6x2 - 9x
-6x2 + 9x
- Multiple ChoicePlease save your changes before editing any questions.
(a+b+c)2 este egal cu
a2+b2+c2+2ab+2ac+2bc
a2+b2+c2+2ab-2ac+2bc
a2+b2+c2+ab+2(ac+bc)
a2 - b2+c2+2ab+2ac+2bc
- Multiple ChoicePlease save your changes before editing any questions.
Descompunerea in factori a expresiei a2 - b2 este
(a+b)(a-b)
a2+ b2
(a+b)2
(a-b)2
- Multiple ChoicePlease save your changes before editing any questions.
Rezultatul calculului (√2 -√3 )(√2 + √3) este
1
-1
-5
0
- Multiple ChoicePlease save your changes before editing any questions.
Factorul comun al expresiei 3x∙(2x – 3) – 2(2x - 3) =
2x-3
3x-2
(2x – 3)(3x – 2)
6x2 -13x +6
- Multiple ChoicePlease save your changes before editing any questions.
Rezultatul ( 4x – 1)2 este
16x2 -1
16x2 -8x + 1
16x2 + 1
16x2 -8x + 2
- Multiple ChoicePlease save your changes before editing any questions.
Rezultatul calculului (2√3 - √5)(2√3 + √5) este un numar
intreg negativ
natural
irational
2/3
- Multiple ChoicePlease save your changes before editing any questions.
Rezultatul calculului (3√2 + √5)2 este egal cu ...
23 + 6√10
23
23 - 6√10
18
- Multiple ChoicePlease save your changes before editing any questions.
Forma descompusă a expresiei x2 - 8 este egală cu ...
(x -2√2)(x + 2√2)
(x - 8)(x + 8)
(x - 64)(x + 64)
(x - 4)(x + 4)
- Multiple ChoicePlease save your changes before editing any questions.
Forma descompusă in factori a expresiei 3x∙(2x – 3) – 2(2x - 3) este
(2x – 3)
(3x - 2)
(2x - 3)(3x - 2)
6x2 - 13x + 6
- Multiple ChoicePlease save your changes before editing any questions.
Restrangerea expresiei 4x2 + 12x + 9 este
(2x + 3)2
(2x + 9)2
(4x + 9)2
4x2 + 9
- Multiple ChoicePlease save your changes before editing any questions.
Rezultatul calculului (x- 1/x)2 este egal cu ...
x2 -x + 1/x2
x2 + 1/x2
x2 -2x + 1/x2
x2 - 1/x + 1/x2
- Multiple ChoicePlease save your changes before editing any questions.
Rezultatul calculului 4x – x2 + 6 + 3x2 – 5 + 2x este
2x4 + 6x + 1
2x2 +6x + 1
2x2 + 6x - 1
2x4 + 6x - 1
- Multiple ChoicePlease save your changes before editing any questions.
Rezulttul calculului 2∙(3x2 – 4x + 1) – 4x∙(3x – 2) este
-6x2 + 2
-6x2 -8x + 2
6x2 + 2
-6x2 -8x + 2
- Multiple ChoicePlease save your changes before editing any questions.
Descompunerea in factori a formulei a2 -2ab+b2 este
(a - b )( a+ b )
(a - b )2
ab ( a-b )
( a+ b )2
- Multiple ChoicePlease save your changes before editing any questions.
atunci a2 este egal cu
14
24
(7 - 2√6)2
(7 + 2√6)2
- Multiple ChoicePlease save your changes before editing any questions.
Modulul numarulu iirational (√2 -3) este
3 - √2
√2 - 3
-3 - √2
3 + √2
- Multiple ChoicePlease save your changes before editing any questions.
Expresia E(x) = 1/ (2x-1) - 1 / (x+1) este definita pentru
∀ x∊ℝ / {1/2; -1}
∀ x∊ℝ / {-1}
x=1/2
∀ x∊ℝ / {1/2}