Question

- - 15.6. 1) 5a(3a - 8) - 36(3a – 8) + 9ab(3a – 8) – (3a – 8); 2) 7y(7x - y) + x( 7 x - y) - 7 xy(7 x - y) + (7 x - y); 3)(a + b)(x + y) - 30(a + b)2 – y(a + b)2 + (a + b)"; 4) m(m + n) - n(m + n) + n(m + n) - m (m + n).​

Answer 1

Ответ:

вот, надеюсь успела и тебя не убили

Answer 2

I can help you with your math problem.

The answer is:

1) 5a(3a - 8) - 36(3a – 8) + 9ab(3a – 8) – (3a – 8) = (3a – 8)(5a - 36 + 9ab - 1) = (3a – 8)(9ab + 5a - 37) 2) 7y(7x - y) + x(7 + x - y) - 7 xy(7 + x - y) + (7 + x - y) = (7 + x - y)(7y + x - 7xy + 1) = (7 + x - y)(-6xy + x + 7y + 1) 3) (a + b)(x + y) - 30(a + b)2 – y(a + b)2 + (a + b) = (a + b)(x + y - 31(a + b) + 1) 4) m(m + n) - n(m + n) + n(m + n) - m(m + n) = 0

I hope this helps. Have a nice day!