+0  
 
0
98
1
avatar

Solve for x, where x > 0 and -21x^2 -11x + 40 = -x^2 - 23x + 41.  Express your answer as a simplified common fraction.

 May 25, 2021
 #1
avatar+121056 
+2

-21x^2 -11x + 40 = -x^2 - 23x + 41       rearrange    as

 

20x^2  - 12x  +   1    =   0         factor  as

 

(10x  - 1)  (2x  - 1)   =   0

 

Setting  each  factor to   0  and solving  for  x  gives

 

x   =  1/10      or      x  =  1/2

 

 

cool cool cool

 May 25, 2021

20 Online Users

avatar
avatar
avatar