![alishadautreuil](/avatars/45437.jpg)
alishadautreuil
18.03.2021 •
Mathematics
Write an exponential function in the form y
and (5, 128)
ab" that goes through points (0,4)
Solved
Show answers
More tips
- H Health and Medicine How to Increase Blood Pressure without Medication?...
- F Food and Cooking What to Give as a Wedding Gift?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- C Computers and Internet How to Learn to Type Fast?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
Answers on questions: Mathematics
- M Mathematics Arealtor makes a commission of $11,400 on a $190,000 house he sells. what is his commission rate?...
- M Mathematics Least to greatest 3.14, 3 2/7, pi, 2 5/6, 3.7...
- M Mathematics Which is more, 72 inches or 6 feet...
- H Health 4. When the sexually assaulted becomes the sexually assaulter. You may remember allegations of 37 year-old Italian actress Asia Argento had sex with a then 17 year-old actor Jimmy...
- B Biology Which of the following statements about water are true? Check all that apply. Water covers 75% of the Earth Once water is used it can never be reused. Only 3% of Earth s water is...
Ответ:
Step-by-step explanation:
We could answer this either by checking each listed expression to see whether it is a factor of 9r^2-4r+1, or
We could take the coefficients of 9r^2-4r+1, determine the quantity b²-4ac (called the 'discriminant') and draw a conclusion based upon whether the discriminant is -, + or 0.
Let's use the 2nd approach.
Here, a = 9, b = -4 and c = 1.
Then the discriminant is b²2 - 4ac, or (-4)² - 4(9)(1), or 16 - 36.
Since 16 - 36 is negative, we conclude that this 9r^2 - 4r + 1 has NO REAL FACTORS.