помогите прошу

(1000:20+30):16+(54:2+73):25-(32:32-0)×1

докажите что при всех целых m значение выражения (m+7)(m+5)-m(m-2)

плиз проверьте моё сочинение

London

London is one of the biggest cities in the world. London it’s the capital of UK. In London live 8 millions people. London consists of 3 parts: The West end, The East end and City of London.

 In London lots of sight. Madame Tussauds it’s the museum of wax. London eye it’s the biggest wheel in the world. The tower of London it’s the oldest place in London. It’s 900 years old. The Buckingham Palace it’s home of queen. Big Ben is a tower. It’s one of the highest towers and clock.

London it’s the beautiful city.