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Mathematics 21 Online
OpenStudy (anonymous):

[(7m^2+5m-5)-(5m^2-2m+8)]-(m^2+m+7)

Nnesha (nnesha):

first thing you have subtraction sign so distribute bracket by negative sign :)

Nnesha (nnesha):

|dw:1417837526516:dw| -1 times 5m^2 = ?? -1 time -2m = ?? -1 times 8 = ?/

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