Find the product. (2f – 1)^2 =​

4f^2 -4f+1

Step-by-step explanation:

2f-1)^2

This is equal to

(2f-1) * (2f-1)

FOIL

first: 2f*2f = 4f^2

outer: 2f*-1 = -2f

inner: -1*2f = -2f

Last = -1*-1 = 1

Add them together: = 4f^2 -2f-2f+1

Combine like terms 4f^2 -4f+1

(2f-1)(2f-1)

2f^2-2f-2f+1

2f^2-4f+1

$5.41

step-by-step explanation:

$20 - $14.51 = $5.49.