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If you complete the square on the equation
\[x^2 + 10x = 9,\]you will get an equation of the form "$(x + r)^2 = c$". Enter this equation.

 Jan 16, 2021
 #1
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x^2  +  10x     =   9

 

Take 1/2  of 10    = 5

Square this = 25

Add to  both sides

 

x^2  + 10x +  25  =   9 + 25

 

x^2 + 10x +  25  =  34       factor the  left  side

 

( x + 5)^2    =   34

 

 

cool cool cool

 Jan 16, 2021

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