Question 385549
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Hi
solving
 (2x-1)(x-4)= 39
 2x^2 - 9x + 4 = 39
 2x^2 -9x -35 = 0
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
{{{x = (9 +- sqrt( 361 ))/(4) }}} 
{{{x = (9 +- 19)/(4) }}} 
   x = 28/4 = 7
   x = -10/4 =  -2.5