The value of the expression 2ab - 3a² when a = 2 and b = -3 is -24.
How to evaluate an expression.
An algebraic expression is a mathematical phrase containing numbers, variables, and operations, but no equal sign or equation.
Given that
a = 2, b = -3
To evaluate the expression 2ab - 3a²
Substitute the values of a and b into the expression and simplify
so,
2ab - 3a² = 2(2)(-3) - 3(2)²
simplify
= -12 - 12 = -24
The value of the expression 2ab - 3a² when a = 2 and b = -3 is -24.
Complete question
If a=2 and b=-3 find the value of: (a) 2ab-3a2