1.

a -b-c2a2a1. ) 2b b-c-a 2b -(a+b+c)2c2c c-a-b(ii) z2y+z+2x2-2(x y+ z)z+x+2y

Answer» a -b-c2a2a1. ) 2b b-c-a 2b -(a+b+c)2c2c c-a-b(ii) z2y+z+2x2-2(x y+ z)z+x+2y


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