Algebraik kasrlarni ko‘paytirish va bo‘lish — 8-sinf Algebra test savollari

1.$\frac{a^2-9}{a+2}\cdot \frac{a+2}{a-3}$ ifodani soddalashtiring.

• A)a + 3
• B)a − 3
• C)a² − 9
• D)$\frac{a+3}{a-3}$

2.$\frac{x^2-y^2}{3x}:\frac{x+y}{6x^2}$ ifodani soddalashtiring.

• A)2x² − 2xy
• B)2x + 2y
• C)$\frac{x-y}{2x}$
• D)x² − y²

3.$\frac{a-b}{a^2+ab}\cdot \frac{a^2-b^2}{{\left(a-b\right)}^2}$ ifodani soddalashtiring.

• A)$\frac{1}{a}$
• B)$\frac{1}{b}$
• C)a/b
• D)$\frac{a-b}{a}$

4.$\frac{m+n}{9m^2{n}^3}:\frac{m^2-n^2}{27m{n}^2}$ ifodani soddalashtiring.

• A)3/(mn(m − n))
• B)3mn/(m-n)
• C)$\frac{m+n}{3mn}$
• D)$\frac{27}{m-n}$

5.$\frac{a-5}{a^2+6a+9}\cdot \frac{{\left(a+3\right)}^2}{a^2-25}$ ifodani soddalashtiring.

• A)$\frac{1}{a+5}$
• B)$\frac{1}{a-5}$
• C)a + 5
• D)$\frac{a-5}{a+5}$

6.$\frac{1}{2xy}\cdot 4x^2\frac{y^3}{5z}\cdot \frac{10z^2}{3x^3}$ ifodani soddalashtiring.

• A)$4y^2\frac{z}{3x^2}$
• B)$4y^2\frac{z}{3x}$
• C)$2y^2\frac{z}{3x^2}$
• D)4yz / (3x²)

7.$\frac{a^2-b^2}{a^2-ab}:\frac{a+b}{a}$ ifodani soddalashtiring.

• A)1
• B)a − b
• C)a + b
• D)$\frac{a-b}{a}$

8.Algebraik kasrlarni bo‘lish qoidasi qanday ifodalanadi: a/b : c/d = ?

• A)ad/(bc)
• B)ac/(bd)
• C)bc/(ad)
• D)bd/(ac)

9.$\frac{x+3}{5}\cdot \frac{10}{x+3}$ ifodaning qiymati (x ≠ −3 da) nechaga teng?

• A)2
• B)1
• C)x + 3
• D)0,5

10.$\frac{2a}{3b}:\frac{4a}{9b}$ ifodani soddalashtiring.

• A)$\frac{3}{2}$
• B)$\frac{2}{3}$
• C)6ab
• D)$\frac{8a}{27b}$