Answer:
A=z
B=-2
C=0
D=30
Step-by-step explanation:
First lets simply the equation
21 - (2x +3)2 + 4(1-1) + z^3
21 - (2x^2 + 9) + 4(0) + z ^3
21 - 2x^2 + 9 + z^3
- 2x^2 + z ^3 + 30
This means that:
A=z
B=-2
C=0
D=30
1. 40
2. 24
3. 7.5
4. 30
5. 22.5
What are the choices, it’s blank.
Its C. i put my best guess into it even tho i kinda suck at geometry <span />