2)
а) 5x^3(5x^3-3y)
b) (a-1)(2a+3)
3) 15a-10b/200b-300a=5(3a-2b)/-100(3a-2b)=-0.05
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2)
а) 5x^3(5x^3-3y)
b) (a-1)(2a+3)
3) 15a-10b/200b-300a=5(3a-2b)/-100(3a-2b)=-0.05