Question

How do you evaluate the expression-4ac for the following conditions:

Answer 1

a. -4ac
   
    -4(2)(-3)
    multiply
 
    -4(-6)
    multiply, again

    24

b. -4ac

   -4(-4)(-2)
   multiply

   -4(8)
   multiply, again

   -32

c. -4ac

    -4(-1)(5)
    multiply
 
    -4(-5)
    multiply, again

     20

Answer 2

(a) = 24
(b) = -32
(c) = 20


To evaluate the expression, take what a and c equal and substitute the numbers into the equation and solve.