Question

ILL MEDAL
Evaluate the expression 3x2 - 8, when x = 4.
A. 40
B. 48
C. 4
D. 15

Answer 1

3(4^2)=?

Answer 2

First start by figuring out what 4 x 4=?
4^2=4 x 4

Answer 3

16

Answer 4

good
3 x 16 - 8 =?

Answer 5

42

Answer 6

Try again...
what's 16 x 3?

Answer 7

48

Answer 8

-8=40

Answer 9

3(4^2)−8
(3)(16)−8
=48−8

Answer 10

48-8=?

Answer 11

40

Answer 12

\[3\ 4^2-8=40 \]

Answer 13

Well done =)

Answer 14

thx

Answer 15

yw

Answer 16

good job