When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
If a = -1 and x = 4, what is the value of a(a - x)?
| 5 | |
| 112 | |
| 0 | |
| 4 |