Question

Which of the following is NOT equal to 4?
A. ( 1)-2 x 22 B. (-2) 2
C. 2-2 D. 2 x 21

Answer 1

none of these are equal to 4.
bcuz..
A.(1)-2×22
= -2×22
= -44
-44 is not equal to 4.

B. (-2)×2
= -4
-4 is not equal to 4.

C.2-2
= 0
0 is not equal to 4

D.2×21
=41.
41 is not equal to 4.

so none of these are equal to 4.


hope it helps... :)

Answer 2

Hi friends

A . 1-2×22=22
B. (-2)2=-2×2= -4.
C. 2-2= 4
D. 2×21 = 42

so c is equal to 4 and b is -4

22 and 42 is not division by 4 so the answer is A and D.

thank you