Question

f x=−9 and y=2, evaluate the following expressions:
4y2−2x2=

Answer 1

Answer:

52

Step-by-step explanation:

4*y*2 = 4*2*2 (since y=2)

= 16

2*x*2 = 2*-9*2 (since x = -9)

= -36

4y2 - 2x2 = 16 - (-36)

= 16 + 36 (since 2 negatives together become positive )

= 52