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(x-3)(x+3)=8x

Guest Oct 17, 2017
 #1
avatar+8 
0

do you need help guest again

theterminat3r18  Oct 17, 2017
 #2
avatar+90968 
+2

(x-3)(x+3)=8x

 

x^2  - 9  =  8x     subtract 8x from both sides

 

x^2 - 8x - 9  = 0      factor

 

(x - 9) ( x +1)  = 0

 

Set both factors to 0

 

x - 9   =  0                                            x + 1  =  0

 

add 9 to both sides                               subtract1 from both sides

 

x =  9                                                x  =  -1

 

And those are the two solutions

 

 

cool cool cool

CPhill  Oct 17, 2017

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