Question

1.
Evaluate the expression below at x = 4.
(2x - 5) (x-1)

Answer 1

Simply replace each occurrence of x with the value 4:

(2*4 - 5)(4 - 1) = ?

Better yet, write this expression with a label: f(x) = (2x - 5)(x - 1).

Then evaluate f(4) = (2*4 - 5) (4 - 1).

Answer 2

9?

Answer 3

Yes. f(4) = (8 - 5) (4 -1) = (3) (3) = 9.

Answer 4

thanks