Use the difference of squares factorization - that for any numbers a and b, (a-b)(a+b)=a^2-b^2.
We have:
(x^2+1)(x^2-1)=x^4-1
In addition:
(x-1)(x+1)=x^2-1, so we have:
(x^2+1)(x+1)(x-1)
As our complete factorization.
4.5
you divide the fractions then subtract them
Answer: last option.
Step-by-step explanation:
- Subtract the fractions that are in the numerator.
- Add the fractions that are in the denominator.
Then:

- Multiply the numerator of the fraction on the top by the denomianator of the fraction on the bottom.
- Simplify.
Then:

Answer:
Step-by-step explanation:
To change a fraction to a decimal, simply divide the numerator by the denominator. The numerator is the top part of the fraction, while the denominator is the bottom part of the fraction.
4 ÷ 5 = 0.8
Thus,

<span>as a decimal would be 0.8</span>