Question

Решите пожалуйста, буду благодарна

Answer 1

2a/a^2-25b^2-2/a+5b=
=2a/(a-5b)(a+5b)-2/(a+5b)=
=2a/(a-5b)(a+5b)-2(a-5b)/(a-5b)(a+5b)=
=2a-2a+5b/(a-5b)(a+5b)=
=5b/(a-5b)(a+5b)

Answer 2

*=2a-2a+10b/(a-5b)(a+5b)=
=10b/(a-5b)(a+5b)