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Mathematics 20 Online
OpenStudy (anonymous):

please find product.(5b-8)(-8b+5)

OpenStudy (anonymous):

-40b^2+89+40

OpenStudy (anonymous):

How did u get that answer

OpenStudy (anonymous):

expand the equation

OpenStudy (anonymous):

for example (a+b)(c+d) then expand it like ac+ad+bc+bd

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