So since you know that x^2-1 is equal to (x-1)(x+1),
you can figure that this factors to
(y^2-x^3)(y^2+x^3)
because you know how the difference of two squares formula, stated on the top line of this answer.
Answer:
40.8
Step-by-step explanation:
Answer:
It is 6
Step-by-step explanation:
Compatible numbers to find two estimates 73÷4,858
70÷4,850 = 0.014
You sure it's not 4,858÷73
4,850÷70 =
______ _____ 69 2/7
70)4850. 7)485
42
65
63
Answer:
The answer is is 50
Step-by-step explanation:
If 3/5 if number is 30, then this means that 1/5 of the number must be 10 (i.e. If we divide 3/5 by 3, we get 1/5, so similarly, we can divide 30 by 3 to get 10). So, if 1/5 of the number is 10, this means the original number is 5x10 = 50.
We can also work this out using algebra:
![\frac{3}{5} x = 30\\3x = 150\\x = 50](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B5%7D%20x%20%3D%2030%5C%5C3x%20%3D%20150%5C%5Cx%20%3D%2050)