\"\"

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The equation is \"\".

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Solve by graphing.

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Apply multiplication property of equality: Multiply each side by 2.

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\"\"

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\"\"                  (Simplify)\"\"

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Apply subtraction property of equality: Subtract x from each side.

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\"\"

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Apply commutative property of addition: a + b = b + a.

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\"\"

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\"\"                     (Simplify)\"\"

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Apply addition property of equality: Add 20 to each side.

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\"\"

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\"\"                                (Simplify)\"\"

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Apply division property of equality: Divide each side by 5.

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\"\"

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\"\"                                    (Simplify)\"\"

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Solve by graphing.

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The equation is \"\".

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The related function is \"\".

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To graph the function make a table

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Draw a table

\ \
\ \
\ \
\ \
\ \
\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \
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x

\ 		\

f(x) = x \"\"2

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f(x)

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(x, f(x))

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1

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= 1 \"\"2

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    \"\"1 

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(1, \"\"1)

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      2

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= 2 \"\"2

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 0

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(2, 0)

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\"\"

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Use these ordered pairs to graph the equation.

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1.      Draw a coordinate plane.

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2.      Plot the points.

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3.      Draw a line through these points.

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\"The

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The  graphintersects the x-axis at 2, hence the solution is 2.\"\"

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Check:-

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To check the solution substitute \"\" in equation \"\".

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\"\"

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\"\"                 (Multiply: \"\")

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\"\"                        (Subtract: \"\")\"\"

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The root of the equation \"\" is 2.