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22nd of March 2017
Mathematics
Q:

Factorise: 84-2r-2r square

Nisha_vini29 - CBSE - Class IX

Wednesday, March 22, 2017 at 16:16:PM

A:

begin mathsize 16px style 84 minus 2 straight r minus 2 straight r squared space
equals negative 2 open parentheses straight r squared plus straight r minus 42 close parentheses
equals negative 2 open parentheses straight r plus 7 close parentheses open parentheses straight r minus 6 close parentheses end style

Wednesday, March 22, 2017 at 17:35:PM