🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION →
Log in
Algebra
1
answer
0
watching
103
views
10 Nov 2019

Im having a hard time figuring out how to factor equations with cubes. For example : -x^3+6x^2-12x+8=0 I understand that turns into -(x-2)^3 but I dont know how to get there.

Watch
1
answer
0
watching
103
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Jarrod Robel
Jarrod RobelLv2
18 Jan 2019

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share

Related questions

For the best rating please complete by answering all thequestions in one post so I could rate you once you post.

Answers must be correct in order to get best rating.


1. Factor out the GCF from thepolynomial.
20m^9 + 6m^7 + 20m^5
2(10m^9 + 3m^7 +10m^5)
No common factor
m^5 (20m^4 + 6m^2 +20)
2m^5 (10m^4 + 3m^2 +10)


2. Find the solution to the system by addition(elimination) method.
4x + 15y = 15
8x - 3y = -3
(1, 0)
(0, 0)
(0, 1)
(1, 1)


3. (11p + 4)(11p - 4)
p^2 - 16
121p^2 + 88p - 16
121p^2 - 16
121p^2 - 88p -16


4. Find the solution to the system by addition(elimination) method.
2x + 15y = -91
9x + 5y = 28
(-5, 7)
(7, -7)
(9, -9)
(-7, 7)


5. Factor by grouping.
18x^3 + 15x^2 + 12x + 10
(3x^2 + 2)(6x + 5)
(18x^2 - 2)(x - 5)
(3x^2 - 2)(6x - 5)
x(18x + 2)(x +5)


6. (x + 3y)(x + 5y)
x^2 + 5xy + 15y^2
x^2 + 8xy + 8y^2
x^2 + 8xy + 15y^2
x + 8xy + 15y


7. 6x^7 (9x^7 + 12x^2 - 7)
54x^7 + 72x^2 - 42
54x^14 + 72x^9
54x^14 + 72x^9 -42x^7
54x^14 + 12x^2 -7


8. 15x^2 - 12x + 10x - 8
(15x + 2)(x - 4)
(15x - 2)(x + 4)
(3x - 2)(5x + 4)
(3x + 2)(5x -4)


9. For the polynomial, state the degree andwhether or not the polynomial is a monomial, a binomial, or atrinomial.
5x^3y^4 - 8x^5y^6 + 8
Binomial, degree 7
Trinomial, degree 3
Trinomial, degree18
Trinomial, degree11


10. (3x^8 + 2x^7 - 4x^6 + 8) + (7x^8 - 4x^7 +8x^6 + 1)
10x^8 - 2x^7 + 4x^6 +9
12x^42 + 9
10x^26 - 2x^14 + 4x^12 +9
4x^8 + 4x^7 + 4x^6 +9


11. (2n^5 - 3n^3 - 6) - (5n^5 - 14n^3 -3)
-3n^5 + 2n^3 - 9
-3n^5 + 11n^3 - 3
5n^8
-3n^5 + 11n^3 -9


12. Use the substitution method to solve thesystem.
x - 4y = -13
7x - 5y = -22
(1, 4)
(-2, 4)
(-1, 3)
No solution


13. Use the substitution method to solve thesystem.
8x - 6y = 32
2x - 2y = 8
(3, 1)
(4, 1)
(4, 0)
No solution


14. Terms in a polynomial are separated byaddition or subtraction.
True
False


15. A polynomial is an algebraic expression ofone or more terms.
True
False


16. A solution of two linear equations in twovariables is an ordered pair that is a solution to eachequation.
True
False


17. The greatest common factor will always begreater than the largest factor of each term of theexpression.
True
False


18. A system of equations in two variables mayhave infinite solutions.
True
False


19. When two or more algebraic expressions aremultiplied, each expression is called a term.
True
False


20. Factoring is multiplication inreverse.
True
False

I’m having trouble figuring out when to factor and when to use the quadratic formula.

Weekly leaderboard

Home
Homework Help 3,900,000
Algebra 190,000
Start filling in the gaps now
Log in