Find the value of the expression 5ab for a = 3, b = 2.
Find the value of expression (a−b)(a2+ab) when a = 3 and b = 2?
Find the value of expression 2a - 2b - 4 + a + b, taking a = 2 and b = 3.
Simplify the expression and find its value when a = 5 and b = −3.
2 (a2 + ab) + 3 − ab