Упростите 56(36+216);(23-7)2;(32-5)(5+35);1\318+372-98

1) 5 * 6 * (3 * 6 + 216) = 5 * (6 * 3 * 6 + 6 * (54 * 4)) =

= 5 * (6 * 3 + 6 * (9 * 6 * 4)) = 5 * (18 + 6 * 6 * 9 * 4) =

= 5 * (18 + 6 * 3 * 2) = 5 * (18 + 18 * 2) = 5 * 18 + 5 * 18 * 2 =

90 + 90 * 2 = 270;

2) (2 * 3 - 7) = (2 * 3) -  2 * 2 * 3 * 7 + (7) = 4 * 3 - 2 * 2 * 3 * 7 + 7 =

= 12 + 7 - 4 * 3 * 7 = 19 + 4 * 21;

3) (3 * 2 - 5) * (5 + 3 * 5) = 3 * 2 * 5 + 3 * 2 * 3 * 5 - 5 * 5 - 3 * 5 * 5 =

3 * 2 * 5 + 9 * 2 * 5 - 3 * 5 - 5 = 12 * 10 - 20;

4) 1/3 * 18 + 3 * 72 - 98 = 1/3 * (9 * 2) + 3 * (36 * 2) - (49 * 2) =

= 1/3 * 3 * 2 + 3 * 6 * 2 - 7 * 2 = 2 * (1 + 18 - 7) = 12 * 2.