All spheres are similar because there are no other configuration of spheres except for being perfectly round three-dimensionally. Similar shapes are shapes where angles are similar as well as the sides which can just be determined through ratio and proportion
Answer: what do you need help with
Explanation: you never posted a problem
The answer is A) 2x + 7.
When you are doing synthetic division, you always pull down the first number to the end area like this.
1 ║ 2 9 7
2
After that you multiply it's result by the number in the front. Then you add it's result to the second number. 2 * -1 = -2. So we add -2 to 9 and pull that down.
1 ║ 2 9 7
2 7
Now we repeat that process and multiply the 7 by -1. The result is -7, and we add that to 7.
1 ║ 2 9 7
2 7 0
If the end result is 0, that means the division went in evenly, with no remainders. We can now add an decreasing number of x's to all of the numbers that came through other than 0.
2x + 7