$\"\"$

\

The given equation is $\"\"$ .

\

$\"\"$ (original equation) \ \

\

$\"\"$ (add 81 on each side) \ \

\

$\"\"$

\

$\"\"$

\

Make a table for the above equation.

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

\ $\"\"$ \	\ $\"\"$ \	\ $\"\"$ \	\ $\"\"$ \	\ $\"\"$ \	\ $\"\"$ \	\ $\"\"$ \	\ $\"\"$ \
\ $\"\"$ \	\ $\"\"$ \	\ 36 \	\ $\"\"$ \	\ $\"\"$ \	\ $\"\"$ \	\ 36 \	\ $\"\"$ \

\

$\"\"$

\

Draw the graph of the equation $\"\"$ .

\

Draw a co-ordinate plane.

\

Plot the points.

\

Draw a smooth curve through this points.

\

$\"graph$

\

The equation has only one solution that is 9.

\

$\"\"$

\

The graph of the equation is

\

\

$\"graph$

\

The equation has only one solution is 9.

\

The equation ha only one root that is 9.