Question

sum of number a and b subtract from their product ​

Answer 1

Answer:

A+B -AB is the expression.

Answer 2

$\textrm{Required Answer = Product of 'a' and 'b' - Sum of 'a' and 'b'}$

$\longrightarrow\textrm{Required Answer = (a \times b) - (a + b) = ab - (a + b) = ab - a - b}$