Answer:
105.
Step-by-step explanation:
21+21+21+21+21=105.
Answer:

Step-by-step explanation:
Put x = 3, y = 2 and z = 5 to the given expression
:

Answer:
x^3+9x^2-3x^2-3
Step-by-step explanation:
You can use a various of methods but when you use the box method you multiply each separately.
Like you would multiply x² by x, 8x by x, -3 by x (thats the first row)
x² by 1, 8x by 1, -3 by 1 ( for the second row)
Then you get those final variables and combine like terms getting the answer above
Absolutely not. The least mixed numbers are 1 and 1/2, and 1 1/2 + 1 1/2 is 3, so no, it is not possible. Hope I helped!
We just check on the graph and see that
the answer is x = -7 and x = 2