شرکت در آزمون آنلاین ریاضی نهم - ریاضی نهم | آزمون شماره 30711

$\frac{{{x}^{2}}+8x+15}{{{x}^{2}}+10x+25}$

$\frac{{{x}^{2}}-3x-40}{(x-8)}$

$\frac{1-2{{x}^{2}}+x}{{{x}^{2}}+2x+1}$

$\frac{{{x}^{2}}+2x-1}{{{x}^{2}}-2x+1}$

$\left\{ \circ  \right\}$

$\left\{ \varnothing  \right\}$

مجموعه اعداد اول کوچک‌تر از 3

مجموعه اعداد اول بین 31 تا 37

$A=\left\{ x\left| x\in \mathbb{Z}\,,\,-20\le x<40 \right. \right\}\,\,\,,\,\,\,B=\left\{ 2x\left| x=3k-1\,,\,k\in \mathbb{Z}\,,\,-7\le k<7 \right. \right\}$ 

$C=\left\{ 3x\left| x\in \mathbb{N}\,,\,x<53 \right. \right\}\,\,,\,\,D=\left\{ k\left| k=\frac{x}{3}\,,\,\,x\in C \right. \right\}$

$E=\left\{ x\left| \frac{x}{7}\in \mathbb{Z}\,,\,-42<x\le 60 \right. \right\}\,\,\,,\,\,\,F=\left\{ k\left| k\in E\,,\,k<40 \right. \right\}$

$G=\left\{ 2x-1\left| x\in \mathbb{N}\,,\,x>12 \right. \right\}\,\,\,,\,\,\,H=\left\{ x\left| x=2k+1\,,\,k\in \mathbb{N}\,,k<20 \right. \right\}$