We are given this
![x^6 -64y^3](https://tex.z-dn.net/?f=x%5E6%20-64y%5E3)
write it as the difference of cubes
![(x^2)^3 -(4y)^3](https://tex.z-dn.net/?f=%28x%5E2%29%5E3%20-%284y%29%5E3)
use the formula for the difference of cubes
![(x^2-4y) ((x^2)^2+x^2*4y+(4y)^2)](https://tex.z-dn.net/?f=%28x%5E2-4y%29%20%28%28x%5E2%29%5E2%2Bx%5E2%2A4y%2B%284y%29%5E2%29)
Now use the formula for the difference of squares as ![4y = (2\sqrt{y} )^2](https://tex.z-dn.net/?f=4y%20%3D%20%282%5Csqrt%7By%7D%20%29%5E2)
![(x-2\sqrt{y}) (x+2\sqrt{y}) (x^4+4x^2y+16y^2)](https://tex.z-dn.net/?f=%28x-2%5Csqrt%7By%7D%29%20%28x%2B2%5Csqrt%7By%7D%29%20%28x%5E4%2B4x%5E2y%2B16y%5E2%29)
Full working out shown from step 1 to last.
follow it and you get 24 square feet as final answer. Good luck in other questions!!!
Answer:
B. 12.5
Step-by-step explanation:
We have the lowe confidence interval = 185
The upper confidence interval = 210
Mean of X = (lower confidence + upper confidence interval)/2
Mean of X = 185 + 210/2
= 197.5
The margin of error = the upper confidence interval - mean of X
= 210-197.5
= 12.5
Answer:
y=-3x^2+12x+63
Step-by-step explanation:
y=-3(x-7)(x+3)
y=-3(x^2-4x-21)
y=-3x^2+12x+63
Awnswr: 21* because 7 x =y and y= 21
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