Answer:
x = ± 2
Step-by-step explanation:
To find the x- intercepts let y = 0 , that is
4x² - 16 = 0 (add 16 to both sides )
4x² = 16 ( divide both sides by 4 )
x² = 4 ( take the square root of both sides )
x = ±
= ± 2
The x- intercepts are x = - 2 and x = 2
Answer:
Step-by-step explanation:
-25/40 + -64/40
-89/40
-2 9/40
Answer:
25
- 30xy + 20xz + 9
- 12yz + 4
Step-by-step explanation:
We multiply it out.
(5x - 3y + 2z) * (5x - 3y + 2z)
5x*5x + 5x*-3y + 5x*2z - 3y*5x - 3y*-3y -3y*2z + 2z*5x +2z * -3y +2z *2z
25
- 15xy + 10xz - 15xy + 9
- 6yz + 10xz - 6yz + 4
Add like terms
25
- 15xy - 15xy + 10xz + 10xz + 9
- 6yz - 6yz + 4
25
- 30xy + 20xz + 9
- 12yz + 4
I believe the answer is 50, hope this helps
D the development of controversy about the Three Gorges Dam