Hi

factoring

X^2 + 8X + 7 = (X+1)(X+7)

CHECKING: (OUTSIDE PRODUCT + INSIDE PPRODUCT = 8X)

F	First terms   X^2

O	Outside terms 7X

I	Inside terms   X

L	Last terms     7



  x ^2 - 10x + 9 = (x-9)(x-1)

CHECKING: (OUTSIDE PRODUCT + INSIDE PPRODUCT = -10x)

F	First terms    x^2

O	Outside terms   -x

I	Inside terms   -9x

L	Last terms       9

 

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