Question

1. (2x + 3) (x - 4) = ...
2. (a + ab + b ) (a - b) =...

Answer 1

1. (2x+3)(x-4)
= 2x^(2) - 8x + 3x - 12
= 2x^(2) - 5x - 12
2. (a + ab + b)(a - b)
= a^(2) + a^(2)b + ab - ab - ab^(2) - b^(2)
= a^(2) + a^(2)b - ab^(2) - b^(2)