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Mathematics 11 Online
OpenStudy (anonymous):

x(x - 2) = 48 find solutions for X

OpenStudy (anonymous):

expand the left side and then get the right hand side equal to zero so you get x^2 - 2x - 48 = 0 the trick is to get two numbers that are multiples of 48 but when added together are equal to -2 if you take 6 and 8 you get 48 so now just figure the signs you want them to equal -2 when added so pick -8 and 6 then you factor and get (x - 8) (x + 6) = 0 and indeed if you FOIL you will get x^2 - 2x + 48

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