1. Add : (i) 9ax 3by-cs. Sby + ax + 3cx
(iii) 2:2 +3v: -4e9y2+3x2+xy
(
(v) 2p* - 3p+p? -5p+7.-3p4 - 7p) -3p2-p-12
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(vii) 3a(2b + 5c), 3c(2a + 2b)
(Hint: (vi) 3ala - b + c) = 3a? - 3ab + 3ac and 2b(a - b + c) = 2ab - 262 +2be
So, add 3a2- 3ab + 3ac and 2ab - 262 +2bc.)
(i) 7a-bc-3abe 3abc abe
(iv) 5r? - 3y + 4y - 9,7y + 5y - 2+ 13
(vi) 3a(a - b + c), 2(a-b+c)
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