сократите дробь 1)6x^2*(x+y)/9xy*(x+y) 2)5m-5n/m^2n-mn^2 3)4a^2-9/10a+15 4)a^2+2ab+b2/a^2-b^2 5)x^3+1/x^2+x
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сократите дробь 1)6x^2*(x+y)/9xy*(x+y) 2)5m-5n/m^2n-mn^2 3)4a^2-9/10a+15 4)a^2+2ab+b2/a^2-b^2 5)x^3+1/x^2+x
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1)6x^2*(x+y)/9xy*(x+y)=2/3
2)5m-5n/m^2n-mn^2=5(m-n)/mn(m-n)=5/mn
3)4a^2-9/10a+15 = (2a+3)(2a-3)/5(2a+3)=2a-3/5
4)a^2+2ab+b2/a^2-b^2=(a+b)^2/(a+b)(a-b)=a+b/a-b
5)x^3+1/x^2+x=(х+1)(x^2+x+1)/x(x+1)=x^2+x+1/x