Respuesta :

#1

  • k=3

Lets verify

  • kx²+5x+2
  • 3x²+5x+2
  • 3x²+3x+2x+2
  • 3x(x+1)+2(x+1)
  • (3x+2)(x+1)

Yes verified

#2

  • k=4

Lets verify

  • 9x²+kx-5
  • 9x²+4x-5
  • 9x²+9x-5x-5
  • 9x(x+1)-5(x+1)
  • (9x-5)(x+1)

Yes verified

Rule to be noted:-

If ax²+bx+c be a function

Then

  • b=a+c

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