Sign In
Ask Question
Mckenzie Wilkerson
Mathematics
3 June, 01:28
3xsquare-9x-30=0
What's the answer
+3
Answers (
1
)
Laylah Rodriguez
3 June, 01:57
0
x = - 2 or x = 5
Step-by-step explanation:
Given
3x² - 9x - 30 = 0 ← in standard form
Divide all terms by 3
x² - 3x - 10 = 0
To factor the quadratic
Consider the factors of the constant term ( - 10) which sum to give the coefficient of the x - term ( - 3)
The factors are - 5 and + 2, since
- 5 * 2 = - 10 and - 5 + 2 = - 3, thus
x² - 3x - 10 = 0
(x - 5) (x + 2) = 0
Equate each factor to zero and solve for x
x - 5 = 0 ⇒ x = 5
x + 2 = 0 ⇒ x = - 2
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“3xsquare-9x-30=0 What's the answer ...”
in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
What is 0.441 rounded to the nearest hundredth?
Answers (1)
lewis has a net spendable income of $2,000 per month. He sets up the following transportation budget for himself.
Answers (1)
If you travel at the rate of 45 miles per hour how many minutes will it take you to travel 1 mile
Answers (1)
3. In order to become a member of the library-all-star-members club, Zot there is a $40 sign-up fee and a $2 monthly fee. Write an equation in slope-intercept form that models this situation. CO. C O in Honnete in problem
Answers (1)
If the intquantity and decprice variables contain the numbers 3 and 15.75, respectively, the condition if intquantity > 0 andalso intquantity 20 will evaluate to
Answers (1)
New Questions in Mathematics
360 miles in a tank o27f gas
Answers (1)
Solve x2 + 12x = - 20 by completing the square.
Answers (1)
Which class has 28% 28% boys? Clear Check Class A: 3 3 out of 30 30 Class B: 28 28 out of 40 40 Class C: 1 1 out of 28 28 Class D: 14 14 out of 50 50
Answers (1)
Alex and bob are playing 5 chess games. Alex is 3 times more likely to win than bob. What is the probability that both of them will win at least 2 games?
Answers (1)
26/310 in simplest form
Answers (1)
Home
»
Mathematics
» 3xsquare-9x-30=0 What's the answer
Sign In
Sign Up
Forgot Password?