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gibsonj338

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 #2
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x+5x1+x+8x+1=8x+9x21

 

2x+5x1+8x+1=8x+9x21

 

2x+5x0+8x=8x+9x21

 

2x+5x+8x=8x+9x21

 

2x+13x=8x+9x21

 

2x+13x8x=8x+9x218x

 

6x+13x=8x+9x218x

 

6x+13x=9x210x

 

6x+13x=9x210

 

6x+13x=9x21

 

6x+13x9x2=9x219x2

 

6x+13x9x2=0x21

 

6x+13x9x2=01

 

6x+13x9x2=1

 

6x+13x9x2+1=1+1

 

6x+13x9x2+1=0

 

x2(6x+13x9x2+1)=0×x2

 

6x3+13x2x9x2x2+1x2=0×x2

 

6x3+13x9x2x2+1x2=0×x2

 

6x3+13x9+1x2=0×x2

 

6x3+13x9+x2=0×x2

 

6x3+13x9+x2=0

 

6x3+x2+13x9=0

 

Since you cannot factor any further, the only way I know of to finish solving this equation is by graphing.

 

Click on the following link to view the graph: https://www.desmos.com/calculator/srwqsdcfr8

 

When looking at the graph, you find that x ≈ -1.669416

Sep 16, 2017