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Mathematics 17 Online
OpenStudy (anonymous):

Determine the value of c that makes x2 - 10x + c a perfect square.

hartnn (hartnn):

divide the co-efficient of 'x' by 2 then square it to get c

hartnn (hartnn):

do you know what is the co-efficient of x here ?

OpenStudy (anonymous):

no lol i think maybe 10x?

hartnn (hartnn):

the co-efficient of x in \(ax^2+bx+c =0\) is just b |dw:1370873364870:dw| so, what will be co-efficient of x in x^2 - 10x + c

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