Question

3×x×x+11×x-12=0 using b square -4ac

Answer 1

Answer:

3x²+11x-12

=> a=3;b=11;c= -12

b²-4ac

= (11)²-4×3×(-12)

= 121 + 144

= 265

•°• answer :- 265

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Answer 2

Step-by-step explanation:

First find the differential of the equation:d/dx(3x^2+11x-12)

=6x+11

Discriminant:+or-√b^2-4ac

=+or-√121+4×3×12

=+or-√121+144

=+or-√265

Equate step (1) and (2) for the value of x

So, 6x+11=+or-√265

So,6x=+or-√265-11

x=(+or-√265-11)/6

Case 1:

x =(√265-11)/6

Case 2:

x=(-√265-11)/6