Algebraik ifodalar, ifodalarni almashtirish

Question 1

Agar $n=-3$, $m=-2$ va $k=3$ bo‘lsa, $\left(\frac{4n^2}{m}\right)^2\cdot\frac{k}{m^2n^2}:\frac{k^3}{(mn)^3}\cdot\frac{mk^2}{n^3}$ ning qiymatini toping.

Accepted Answer

144

Answer

288

Answer

48

Answer

$-48$

Question 2

Soddalashtiring: $\frac{x+6\sqrt{x}+8}{\sqrt{x}+4}-\frac{x+6\sqrt{x-2}+6}{\sqrt{x-2}+4}$, bunda $x\ge2$.

Accepted Answer

$\sqrt{x}-\sqrt{x-2}$

Answer

$\sqrt{x+2}-\sqrt{x}$

Answer

$\sqrt{x+2}-\sqrt{x-2}$

Answer

$\sqrt{x}+\sqrt{x-2}$

Question 3

$x=4$ bo‘lsa, $\frac{x^2-4}{4x^2}\cdot\frac{2x}{x+2}$ ifodaning qiymatini toping.

Accepted Answer

0,25

Answer

0,05

Answer

0,02

Answer

0,01

Question 4

$5\cdot(2a-b)-6\cdot(4a-3b)$ ifodani soddalashtiring.

Accepted Answer

$-14a+13b$

Answer

$-14a-23b$

Answer

$-14a-4b$

Answer

$14a-13b$

Question 5

Agar $xy=5$ va $x+y=-5$ bo‘lsa, $(3+2x)^2\cdot y+(3+2y)^2\cdot x$ ifodaning qiymatini toping.

Accepted Answer

$-25$

Answer

0

Answer

5

Answer

$-5$

Question 6

Soddalashtiring: $\left(\sqrt7+1-\sqrt3\right)\left(\sqrt7+\sqrt3-1\right)$

Accepted Answer

$3+2\sqrt3$

Answer

$5+2\sqrt3$

Answer

$3-2\sqrt3$

Answer

$5-2\sqrt3$

Question 7

Agar $x-y=5$ bo‘lsa, $6x+5-6y$ ning qiymatini toping.

Accepted Answer

35

Answer

25

Answer

30

Answer

40

Question 8

Kasrni qisqartiring: $\frac{15x^2-x-28}{3x+4}$

Accepted Answer

$5x-7$

Answer

$5x+7$

Answer

$x+7$

Answer

$x-7$

Question 9

Agar $a=-9$ bo‘lsa, $216+108a+18a^2+a^3$ ifodaning qiymatini toping.

Accepted Answer

$-27$

Answer

$-64$

Answer

$-8$

Answer

$-48$

Algebraik ifodalar, ifodalarni almashtirish

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