bublyjav bublyjav
  • 03-06-2022
  • Mathematics
contestada

Factor: 5x2 – 15x – 20.

(a) 5(x-4)(x+1),

(b) -2(x-4)(x+5),

(c) -5(x+4)(x-1),

(d) 5(x+4)(x+1).

Respuesta :

loneguy
loneguy loneguy
  • 03-06-2022

Answer:

[tex]a)~5(x-4)(x+1)[/tex]

Step-by-step explanation:

[tex]~~~5x^2 -15x -20\\\\=5(x^2 -3x -4)\\\\=5(x^2 -4x +x -4)\\\\=5\textbf{[}x(x-4) +(x-4)\textbf{]}\\\\=5(x-4)(x+1)[/tex]

Answer Link

Otras preguntas

Find the value of the variable
convex or concave polygon?
what is radical and how to use it
What is the distance between 120-130 on a number line?
What are rational numbers and irrational numbers? please use simple language.
Rationalize the denominator of 3 root 5 + root 3/root 5 - root 3
I just need to know the answer pls
4. I washed my car. - Present & Future: Present- Washe washedir my car you Future-wash my 5. The police search for the robbers. - Past & Future: Past. T
A 5 kg box on a horizontal table is pushed by a horizontal force of 15 N as shown on the right. If the coefficient of friction is 0.4, will the box move?
The length of the three sides of a triangle are different prime numbers. If two sides have lengths 3 and 11, which of the following could be the length of the t