Question 431930
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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