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Mathematics 23 Online
OpenStudy (anonymous):

Multiply and simplify: (x^2 -3x -4)/(x-2) * (x+3)/(x+1)

OpenStudy (anonymous):

try to factor \[x^2-3x-4\]

OpenStudy (anonymous):

(x-3)(x+1)

OpenStudy (anonymous):

does -3*1= -4

OpenStudy (anonymous):

no

OpenStudy (anonymous):

then those will not be factors

OpenStudy (anonymous):

the last numbers of the factors will multiply to be -4 and add up to be -3

OpenStudy (anonymous):

try listing all of the multiples of -4

OpenStudy (anonymous):

the find which adds up to become -3

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