Помогите пожалуйста с заданием!

 

1.Разложите на множители:

a) 49-x^2;

б) 9m^2-225n^2;

в) 36x^2y^2-1;

г) t^4q^6-64p^2;

д) 144-(m-4)^2;

 

2. Решите уравнение 49x^2-1=0

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