Question

Which polynomial is a difference of two squares?

x2 − 16

x2 + 16

x2 − 8

x2 + 8

The third one? @amistre64

Answer 1

well, you got difference right, its subtraction; but 8 is not a perfect square.

Answer 2

\[\large a^2-b^2 = (a-b)(a+b)\]

Answer 3

Then,the first one. :

Answer 4

Here are perfect squares:
1*1=1
2*2=4
3*3=9
4*4=16
5*5=25
6*6=36
7*7=49
8*8=64
9*9=81
10*10=100

I don't wanna go on..

Answer 5

first one is good :)

if we run thru the perfect squares:

0^2 = 0
1^2 = 1
2^2 = 4
3^2 = 9
4^2 = 16 <-- that works fine
5^2 = 25
6^2 = 36