Answer:
9 (1-2x²)
Explanation:
The given expression is:
30 - 9x²*2 - 21 - 4 + 4
The first step is to compute the multiplication. This will give:
30 - 18x² - 21 - 4 + 4
Then, we will add like terms as follows:
(30-21-4+4) - 18x²
= 9 - 18x²
Finally, we can take the 9 as a common factor from both terms, this will give:
9 (1-2x²)
Hope this helps :)
Answer:
The rocket is now too heavy to reach its destination.
freezing. Think of what happens when you put water in the freezer
Answer:
NaNO2 is the formula for sodium nitrite
Explanation:
Check the selected ions chart to find out more in depth.
Explanation:
I think B a chemical change
