+0  
 
0
18
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avatar+397 

Find the largest value of $x$ such that $3x^2 + 17x + 15 = 2x^2 + 21x + 12 - 5x^2 + 17x + 34.$

 Mar 16, 2024
 #1
avatar+129659 
+1

Simplify as

 

6x^2  - 21x  - 31     =   0

 

x =   [ 21 + sqrt  [ 441  + 744 ] ] / 12  =  [ 21 + sqrt (1185)  ]  / 12 

 

 

cool cool cool    

 Mar 16, 2024

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