1) 2m(a + b) + a + b = 2m(a + b) + 1(a + b) = (2m + 1)(a + b)
2) 2a(x + y) + x + y = 2a(x + y) + 1(x + y) = (2a + 1)(x + y)
1) 2m(a + b) + a + b = 2m(a + b) + 1(a + b) = (2m + 1)(a + b)
2) 2a(x + y) + x + y = 2a(x + y) + 1(x + y) = (2a + 1)(x + y)