Answer:
(x+1)(x-1)(x+3)(x-3)
Step-by-step explanation:
x4-10x^2+9
Group expression so that the coefficients of the x^2 terms add up to +9.
= x^4 -9x^2 - x^2+9
match coefficients in both groups
= x^4 -9x^2 - (x^2-9)
factor each group
= x^2 (x^2-9) - 1(x^2-9)
now factor out the common factor (x^2-9)
= (x^2-1)(x^2-9)
Finally, factor each quadratic factor
= (x+1)(x-1)(x+3)(x-3)
7x^2 + -x + -2 + 6x^2 + - 3
6x^3 + 7x^2 – x – 5
Your answer is A: 6x^3 + 7x^2 – x – 5
Answer: 5hrs = 200miles.
if you divided 120 by 3 you will get 40 thats how many miles it in 1 hour.
Step-by-step explanation:
1 hour = 40
2 hours = 80
3 hours = 120
4 hours = 160
5 hours = 200
the equation is increasing by 40 per hour
I’m assuming that you only need the answer to the last one but let me know if I’m wrong :)))
I believe C would be 23.6
