Answer:
9.5 cm
Step-by-step explanation:
on the bottom with 18, divide that like 3 12 3 (which is 18) and it will make a square in the middle.
10^2 = x^2+3^2
100= x^2+9
x^2=91
square root 91
=9.5 cm
-4 times -2 equals 8.
8 times -1 equals -8.
Therefore, the point on your number line that is on -8 is your answer!

Use the formula: (a+b)(a-b) = a^2 - b^2
![x^4 - [(x^2)^2 - 1^2]\\\\x^4 - (x^4-1)\\\\x^4 - x^4 + 1\\\\\boxed{\bf{1}}](https://tex.z-dn.net/?f=x%5E4%20-%20%5B%28x%5E2%29%5E2%20-%201%5E2%5D%5C%5C%5C%5Cx%5E4%20-%20%28x%5E4-1%29%5C%5C%5C%5Cx%5E4%20-%20x%5E4%20%2B%201%5C%5C%5C%5C%5Cboxed%7B%5Cbf%7B1%7D%7D)
No matter what the value of 'x' is, the final answer will always be
1.