2x + 3y =12

3x + 2y =12

2x +3y =6

3x +2y =6

$x^2+x+1$

$x^2-x+1$

$x^2-2x+2$

$x^2-2x-2$

$x\le \frac{1}{2} or x\ge \frac{9}{2}$

$\frac{1}{2} <x<\frac{9}{2}$

$- \frac{1}{2} \le x\le \frac{9}{2}$

$\frac{1}{2} \le x\le \frac{9}{2}$

1

2

3

4

$\frac{u^2}{g},\frac{u}{g}$

$\frac{u^2}{2g},\frac{u}{g}$

$\frac{u^2}{g},\frac{2u}{g}$

$\frac{u^2}{2g},\frac{2u}{g}$

2sq. units

$\frac{3}{4} sq. units$

$\frac{2}{3} sq. units$

$\frac{1}{2} sq. units$

$25 m/se{c}^2$

$15 m/se{c}^2$

$30 m/se{c}^2$

$20 m/se{c}^2$

9

6

7

8

$-2\le p\le 2$

$-4<p\le 4$

$-2<p<2$

$-4\le p\le 4$

$\frac{1}{2\sqrt{3}}$

$2\sqrt{3}$

$\sqrt{3}-2$

$2-\sqrt{3}$

$4\sqrt{3} units$

$\sqrt{3} units$

$2\sqrt{3} units$

$3\sqrt{3} units$

1

-1

0

2

21

30

24

20

$\frac{1}{2}(\cos A +\sin A)$

$\frac{1}{2}\sin A$

$-\cos A$

$\frac{\sqrt{3}}{2} \cos A$

1,1

3,4

-1,1

5,-5

$x^2 -5x+3=0$

$3x^2 +5x-1=0$

$3x^2 -5x+1=0$

$x^2 +5x+3=0$

abc

abc (a+b) (b+c ) (c+a)

(a+b) (b+c) (c+a)

0

7x +5y -1 =0

7x +5y +1=0

5x + 7y -15 =0

7x -5y -15=0

$\frac{1}{\sqrt{3}}$

$\sqrt{3}$

$\frac{\sqrt{3}}{2}$

1

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

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

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

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