Sign In
Ask Question
Kyson Sheppard
Mathematics
15 August, 14:09
Solve 3x^3-9x^2-12x
+2
Answers (
1
)
Jamie Moody
15 August, 14:30
0
x = - 1, 0, and 4
Step-by-step explanation:
Step 1: Set the expression equal to zero. Solving means to find out what values of x make the equation equal zero.
3x³ - 9x² - 12x = 0
Step 2: Factor out the largest common factor is there is one.
Here the largest common factor is 3x. Now we have
3x (x² - 3x - 4) = 0
Step 3: Factor the quadratic expression x² - 3x - 4
3x (x - 4) (x + 1) = 0 (two numbers that add up to - 3 and multiply to - 4)
Step 4: Set each term equal to zero and solve ...
3x = 0, so x = 0 (divide both sides by 3 to isolate x)
x - 4 = 0, so x = 4 (add 4 to both sides to isolate x)
x + 1 = 0, so x = - 1 (subtract 1 from both sides to isolate x)
So our solutions are
x = - 1, 0, and 4
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“Solve 3x^3-9x^2-12x ...”
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
Maddox wants to go back to college full-time. His current employer has agreed to reduce his hours from 40 hours to 25 hours while retaining his current rate of pay. Maddox has lived in his own apartment for 1 year and really likes his independence.
Answers (1)
What is the vertex of the function f (x) = 1/2x2 + 3x + 3/2?
Answers (1)
Round 3.75 to the nearest whole number
Answers (2)
Describe the pattern in the sequence. Find the next two terms of the difference. -2, - 5, - 8, - 11, ...
Answers (1)
Which numbers are solutions to the inequality 2x - 1 > x + 2? Check all of the boxes that apply. 0 1 2 3 4 5
Answers (1)
New Questions in Mathematics
The price of an article on sale was 70% of the regular price. If the sale price was $28, what was the regular price?
Answers (1)
There are 12 players on a new softball team. before the team starts playing games the team must pay a total of $ 572. along with the registration fee, the team will also need to spend a total of $ 1,240 on equipment.
Answers (1)
Simplify. 8 (4x-3y-5) - 2 (3x-2) Show how you got the answer
Answers (1)
Paula is given a litre bottle of water during her fitness assessment at the gym. She drinks 375 millilitres of the water. How much is left?
Answers (1)
Is the transformation an isometric transformation? Explain
Answers (1)
Home
»
Mathematics
» Solve 3x^3-9x^2-12x
Sign In
Sign Up
Forgot Password?