tayylornestor tayylornestor
  • 13-06-2019
  • Mathematics
contestada

The polynomial 6x2 + x − 15 has a factor of 2x − 3. What is the other factor?

3x − 5
3x + 5
4x − 5
4x + 5

Respuesta :

kudzordzifrancis
kudzordzifrancis kudzordzifrancis
  • 24-06-2019

Answer:

[tex](3x+5)[/tex]

Step-by-step explanation:

The given polynomial expression is:[tex]6x^2+x-15[/tex]

We compare to [tex]ax^2+bx+c[/tex] and have a=6,b=1,c=-15

The product [tex]ac=6\times -15=-90[/tex]

Two factors of -90 that sums to 1 are -9 and 10

We split the middle term to get:

[tex]6x^2+10x-9x-15[/tex]

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

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

Therefore the other factor is:

[tex](3x+5)[/tex]

Answer Link
amyf2426 amyf2426
  • 06-03-2021

Answer: B

Step-by-step explanation:

Answer Link

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