Answer :

Answer:23

Step-by-step explanation:

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Step-by-step explanation:

x²+x-12

Apply middle term factor

  • x²+4x-3x-12
  • x(x+4) -3(x+4)
  • (x-3)(x+4)

Now

  • ax²+bx+c is the general form

Given that x²+x-12

  • So a = 1, b = 1,c = -12