tell the answers of all three:
1. Find the value of x ;-

a) 9x +6= 8 - 2x          ​(b) 2x - 1 = 14-x
c) $2x + \frac{5}{3} = \frac{26}{3}-x$

2. Name the quadrilaterals that have:-

a) four sides of equal length.
b) all interior angle 90^o
c) dialonals ae 1 to each other. 

3. Identify the terms and coefficient in the given expression:
$a) 9x^2+5x+6 b) 4y^2-7$
 

Dear Student,

The solutions to your ( 1^st ( a ) , 2^nd ) query have been provided below:

1 ) ( a ) We have :  9 x + 6 = 8 - 2 x 

Now we add ' 2 x '  on both hand side and get  :

$\Rightarrow$9 x + 6 + 2 x  = 8 - 2 x  + 2 x

$\Rightarrow$11 x + 6  = 8

Now we subtract ' 6 '  on both hand side we get :

$\Rightarrow$11 x + 6  - 6 = 8 - 6

$\Rightarrow$11 x = 2

Now we divide ' 11 '  on both hand side we get  :

$$\begin{gathered} \Rightarrow \frac{11 x}{11} = \frac{2}{11} \\ \mathbf{\Rightarrow }\mathit{x}\mathbf{ }\mathbf{=}\mathbf{ }\frac{\mathbf{2}}{\mathbf{11}}\mathbf{ }\mathbf{ }\mathbf{ }\mathbf{ }\mathbf{ }\mathbf{ }\mathbf{ }\mathbf{ }\mathbf{(}\mathbf{ }\mathbf{Ans}\mathbf{ }\mathbf{)} \end{gathered}$$

2 )

a )  Four sides equal in length so quadrilateral could be :  Square or Rhombus .

b ) All interior angles at 90 so quadrilateral could be :  Square or Rectangle .

c ) Diagonals are perpendicular to each other so quadrilateral could be :  Square or Rhombus or kite .

Hope this information will clear your doubts about topic.

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