Answer:
<u>Answer</u><u>:</u><u> </u><u>4</u><u>x</u><u>²</u><u> </u><u>-</u><u> </u><u>9</u><u>x</u><u> </u><u>+</u><u> </u><u>2</u><u>0</u><u> </u>
Step-by-step explanation:
• General quadratic equation:
![{ \rm{ {x}^{2} - (sum \: of \: roots)x + (product \: of \: roots) }}](https://tex.z-dn.net/?f=%7B%20%5Crm%7B%20%7Bx%7D%5E%7B2%7D%20%20-%20%28sum%20%5C%3A%20of%20%5C%3A%20roots%29x%20%2B%20%28product%20%5C%3A%20of%20%5C%3A%20roots%29%20%7D%7D)
• sum of roots → 4 + 5 = 9
• product of roots → 4 × 5 = 20
• substitute:
![{ \boxed{ \rm{4 {x}^{2} - 9x + 20 }}}](https://tex.z-dn.net/?f=%7B%20%5Cboxed%7B%20%5Crm%7B4%20%7Bx%7D%5E%7B2%7D%20%20-%209x%20%2B%2020%20%7D%7D%7D)
Answer:
![8n](https://tex.z-dn.net/?f=8n)
Step-by-step explanation:
The answer would be
because
= ![8n](https://tex.z-dn.net/?f=8n)
Step-by-step explanation:
1:d
2:c
3:a
4c
5:b
i think so
Answer:
-4 ≤ f (
) ≤ 4
Step-by-step explanation:
The range of a function is the allowed y-values of the function.
We can simply look at the periodic function below and see that the y-value ranges from a negative 4 to a positive 4. It oscillates betwen -4 and 4. That is the range.
We can say -4 ≤ f (
) ≤ 4
Last answer choice is right.
*** <u>NOTE:</u> it is a type, not "0", rather "
"