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Mathematics 7 Online
OpenStudy (yacoub1993):

http://prntscr.com/38tvlo @Aditi_Singh

OpenStudy (anonymous):

start by squaring on both sides

OpenStudy (yacoub1993):

hw

OpenStudy (anonymous):

use the formula : (a-b)^2 = a^2 + 2a*b : b^2

OpenStudy (yacoub1993):

i still didnt get this one

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