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Mathematics 15 Online
MsBrains (ms-brains):

Help! Please show work too. Thank you. http://prntscr.com/b1r7lb

OpenStudy (fortytherapper):

That form is in ax^2 + bx. Do you remember what to divide by 2?

OpenStudy (anonymous):

x^2 +2bx +b^2 = (x+b)^2 so than you see that 2b = 6 so than b= ? hope this will help you to solve it easy

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