Hi,

(x-5)(x+9) = x^2 + 4x - 45

F	First terms  x^2

O	Outside terms 9x

I	Inside terms -5x

L	Last terms -45

(y-8)(y-6) = y^2 - 14y + 48

F	First terms y^2

O	Outside terms -6y

I	Inside terms  -8y

L	Last terms 48

(2x+1)^2 = (2x+1)(2x+1) = 4x^2 + 4x + 1

F	First terms 4x^2

O	Outside terms  2x

I	Inside terms   2x

L	Last terms 1 

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