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Chapter 5: Q. 69 (page 284)

Solve the equation3x3=9x

and verify your results using a graphing utility.

Short Answer

Expert verified

Required solution set is{0,2,-2}

Step by step solution

01

Step 1. Given information     

3x3=9x

02

Step 2. Calculations   

3x3=9x3x3=32xifau=avthenu=vx3=2xx3-2x=0x(x2-2)=0x(x-2)(x+2)=0x=0,2,-2

03

Step 3. Graphing solution     

Graph y=3x3and y=9xintersect at (0,1) , (2,322),(-2,,3-22)

Hence the required solution set is{0,2,-2}.

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