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Astme astendamine, valemite kordamine, hulkliikmetega arvutamine

Total questions: 17

Worksheet time: 17mins

Name
Class
Date
1.

Leia korrektsed korrutamise abivalemid.

a)

(a+b)(ab)=a2b2\left(a+b\right)\left(a-b\right)=a^2-b^2

b)

(ab)2=a22ab+b2\left(a-b\right)^2=a^2-2ab+b^2

c)

(a+b)2=a2+2ab+b2\left(a+b\right)^2=a^2+2ab+b^2

d)

(a+b)(a+b)=a2+b2\left(a+b\right)\left(a+b\right)=a^2+b^2

e)

(ab)(a+b)=a22ab+b2\left(a-b\right)\left(a+b\right)=a^2-2ab+b^2

2.

Tegurda

8xy4x2y2+2xy=8xy-4x^2y^2+2xy=  

a)

4(2xyx2y2+xy)4\left(2xy-x^2y^2+xy\right)  

b)

2(4xy2xy+xy)2\left(4xy-2xy+xy\right)  

c)

2xy(42xy+1)2xy\left(4-2xy+1\right)  

d)

xy(8+4+2)xy\left(8+4+2\right)  

3.

Tegurda

4x-8y=

a)

2(2x+2y)

b)

4(x-2y)

c)

4x(1-2y)

d)

8(2x-y)

4.

Tegurda 16a2- 4b2

a)

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

b)

4(4a2-b2)

c)

(4a-2b)(4a+2b)

d)

(8a-2b)(8a+2b)

5.

Märgi õiged tegurdamised.

a)

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

b)

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

c)

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

d)

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

e)

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

6.

Leia õige sulgude avamine avaldisele (x+2)(x3)\left(x+2\right)\left(x-3\right)

a)

x23x+2x6x^2-3x+2x-6

b)

x2+3x2x+6x^2+3x-2x+6

c)

x23x+2x6-x^2-3x+2x-6

d)

x23x2x6x^2-3x-2x-6

e)

x23x+2x+6x^2-3x+2x+6

7.

Leia õige sulgude avamine avaldisele (x+2)(x3)-\left(x+2\right)\left(x-3\right)

a)

x23x+2x6x^2-3x+2x-6

b)

x2+3x2x+6-x^2+3x-2x+6

c)

x23x+2x6-x^2-3x+2x-6

d)

x23x2x6-x^2-3x-2x-6

e)

x23x2x6-x^2-3x-2x-6

8.

Märgi õige sulgude avamine avalisele (x3)2-\left(x-3\right)^2

a)

x26x+9x^2-6x+9

b)

x26x+9-x^2-6x+9

c)

x2+6x9-x^2+6x-9

d)

x26x9-x^2-6x-9

e)

x26x9x^2-6x-9

9.

Korruta hulkliikmed ja ava sulud ning märgi õige vastus avalisele (3x2y)(2y3x)-\left(3x-2y\right)\left(2y-3x\right)

a)

(3x+2y)(2y3x)\left(3x+2y\right)\left(2y-3x\right)

b)

(3x2y)(3x2y)\left(3x-2y\right)\left(3x-2y\right)

c)

(3x+2y)(2y3x)\left(-3x+2y\right)\left(2y-3x\right)

d)

(2y3x)2\left(2y-3x\right)^2

e)

(2y3x)(2y3x)\left(2y-3x\right)\left(2y-3x\right)

10.

Milline on õige ruutkolmliikme tegurdamise valem?

a)

ax2+bx+c=a(xx1)(xx2)ax^2+bx+c=a\left(x-x_1\right)\left(x-x_2\right)

b)

ax2+bx+c=a(x+x1)(xx2)ax^2+bx+c=a\left(x+x_1\right)\left(x-x_2\right)

c)

ax2+bx+c=a(x+x1)(x+x2)ax^2+bx+c=a\left(x+x_1\right)\left(x+x_2\right)

d)

ax2bx+c=a(xx1)(xx2)ax^2-bx+c=a\left(x-x_1\right)\left(x-x_2\right)

e)

ax2bxc=a(xx1)(xx2)ax^2-bx-c=a\left(x-x_1\right)\left(x-x_2\right)

11.

Milline on õige valem?

a)

x=b±b24ac2ax=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a}

b)

x=b±b24ac2ax=\frac{b\pm\sqrt[]{b^2-4ac}}{2a}

c)

x=b±b24ac2ax=\frac{-b\pm\sqrt[]{-b^2-4ac}}{2a}

d)

x=a±a24bc2bx=\frac{-a\pm\sqrt[]{a^2-4bc}}{2b}

e)

x=b±b2+4ac2ax=\frac{-b\pm\sqrt[]{b^2+4ac}}{2a}

12.

Lahenda ruutvõrrand 2x22x12=02x^2-2x-12=0

a)

x1=3 ja  x2=2x_1=-3\ ja\ \ x_2=2

b)

x1=3 ja  x2=2x_1=-3\ ja\ \ x_2=-2

c)

x1=3 ja  x2=2x_1=3\ ja\ \ x_2=2

d)

x1=3 ja  x2=2x_1=3\ ja\ \ x_2=-2

13.

Tegurda avaldis 2x22x122x^2-2x-12 Ruutvõrrandi nullkohad on 3 ja -2. Vajadusel kasuta selle ülesande lahendamiseks õ lk 86.

a)

2(x3)(x+2)2\left(x-3\right)\left(x+2\right)

b)

2(x3)(x2)2\left(x-3\right)\left(x-2\right)

c)

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

d)

2(x+3)(x2)2\left(x+3\right)\left(x-2\right)

14.

Vii kordaja sulu sisse 2(x3)(x52)2\left(x-3\right)\left(x-\frac{5}{2}\right)

a)

(2x6)(2x5)\left(2x-6\right)\left(2x-5\right)

b)

(x3)(2x5)\left(x-3\right)\left(2x-5\right)

c)

(2x6)(2x2)\left(2x-6\right)\left(2x-2\right)

d)

(x3)(x2)\left(x-3\right)\left(x-2\right)

15.

Astme astendamisel astendajad korrutatakse. Astenda üksliige (2x7y)4=\left(2x^7y\right)^4=  

a)

8x28y48x^{28}y^4  

b)

8x11y58x^{11}y^5  

c)

16x28y16x^{28}y  

d)

16x28y416x^{28}y^4  

e)

8x11y48x^{11}y^4  

16.

Astme astendamisel astendajad korrutatakse. Astenda (a4)5

a)

a9

b)

a20

c)

5a4

d)

a45

17.

Astme astendamisel astendajad korrutatakse. Astenda (-3x4)3

a)

-9x12

b)

27x12

c)

9x12

d)

-27x12