mariana4444
mariana4444 mariana4444
  • 12-07-2020
  • Mathematics
contestada

Can someone answer this question for me? Thank you.

Can someone answer this question for me Thank you class=

Respuesta :

Alfpfeu
Alfpfeu Alfpfeu
  • 12-07-2020

Answer:

[tex]\boxed{\sf \ \ \ 3x^3-9x^2-30x=3x(x-5)(x+2) \ \ \ }[/tex]

Step-by-step explanation:

hello

step 1 - put 3x in factor

[tex]3x^3-9x^2-30x=3x(x^2-3x-10)[/tex]

step 2 - factorise the quadratic form

product of zeros are -10 and the sum is 3, the roots are 5 and -2, as below

[tex]x^2-3x-10=x^2+2x-5x-10=x(x+2)-5(x+2)=(x-5)(x+2)[/tex]

so the answer is

[tex]3x^3-9x^2-30x=3x(x-5)(x+2)[/tex]

hope this helps

Answer Link

Otras preguntas

10ac-x / 11 = -3 for a
what is a number system, and what is the total number of digits used in this system called?
To prevent an overuse injury from occurring, a person should A. wear protective gear, such as a knee brace. B. stay with the same exercises so that
what economic advantages did the north have over the south
The arcade has 3 pinball machines and five video games. If a person wants to play one video game and one pinball game, how many different combinations of games
that is a form of what to keep his soil as productive as possible which of these actions would help him achieve his goal
How long will it take for Alec's account balance to equal 95
What is the best response for this question. ¿Qué Te gusta más,usar la computadora o jugar videojuegos
I need help asap! Y over x minus 3 equals 6. I need help solving for Y.
which of the following are sources of authority? A. a position or jobB. a biological or social relationshipC. a rule, regulation, or lawD. all of these