please give write answers by step by step explanation
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Answer:
Step-by-step explanation:
2
(a)
3a+5b+2c+2a+3b-cand a+b+c
=6a+9b+3c-c
=6a+9b+2c
(b)
(x-2y)(3x-5Y)
3x^2-5xy-6xy+10y^2
3x^2+10y^2-11xy
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