Вправи: 105

105. Спростіть вираз:

1) 1 – m2 – n3 = 6-3m-2n6; 2) 4 + 1a – 1b = 4ab+b-aab;

3) m-23 – 1 + m+24 = 4m-2- 12+3(m+2)12 = 4m-8-12+3m+612 = 7m-1412;

4) 1a+b + a – b = 1+a+b(a+b)a+b = 1+ a2- b2a+b.