Question

12abx^2-(9a-8b^2)x-6ab=c

Answer 1

here A = 12 ab , B = -(9a2-8b2) , C = -6ab  

 

=> D2 = B2- 4 AC

     = (9a2-8b2)2 -4(12ab)(-6ab)

     = (9a2-8b2)2 + 288a2b2

     = 81 a4 +64b4 -144a2b2 + 288a2b2

     =81 a4 +64b4 +144a2b2 

 =>D2 = (9a2+8b2)2

=> D =(9a2+8b2) , - (9a2+8b2)

 

x = (-B +D) / 2A , (-B - D) / 2A

=> x =  (9a2-8b2+ 9a2+8b2 )/2(12ab) ,

(9a2-8b2 -9a2-8b2 )/2(12ab) 

=> x = 18 a2 /24ab , -16b2/24ab

=> x = 3a/4b , - 2b/3a Answer   

 

Answer 2

Step-by-step explanation:

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