Simplify. 2-4:2+23 - 5 2 7 8

2-4:2+23-5278 - 2:25-5278 - 2:-5253 2:5253 0.000380734818

See below.

Step-by-step explanation:

2-4:2+23 =

= 2 - 2 + 23

= 0 + 23

= 23

This is the answer of the problem you posted, where 23 is the number twenty-three. 23 is not an answer choice, so perhaps 23 is not the number twenty-three, but rather 2 to the 3rd power, 2^3.

2-4:2+2^3 =

= 2 - 2 + 8

= 0 + 8

= 8

8 is one of the choices.