Question

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

Answer 1

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