elizabeth982 elizabeth982
  • 26-02-2021
  • Mathematics
contestada

Factorise:
3x^2-2x-5

Respuesta :

Phobic111
Phobic111 Phobic111
  • 26-02-2021

Answer:

( 3[tex]x[/tex] - 5 ) ( [tex]x[/tex] + 1 )

Step-by-step explanation:

[tex]3x^{2}[/tex] - 2[tex]x[/tex] - 5

(Multiply 3 from [tex]3x^{2}[/tex] with -5)

Product = -15

Sum = -2

(3 times - 5 gives the product '-15' and 3 plus -5 gives the sum -2)

[tex]3x^{2}[/tex] + 3[tex]x[/tex] - 5

3[tex]x[/tex] ( [tex]x[/tex]  + 1 ) - 5 ( [tex]x[/tex] + 1 )

= ( 3[tex]x[/tex] - 5 ) ( [tex]x[/tex] + 1 )

Answer Link

Otras preguntas

Why did the united states establish the open door policy?
Republicanism is similar to the idea of representative democracy because both
Finding the domain of a rational function. F(x)=x/x^2-4
Why did england want to begin a colony on north America eastern shore
PLEASE PLEASE HELP ME!! NEEDING HELP BADLY! please see the attached image I can't figure out the questions!
what is 6xy/16y in simplest form?
what is the difference between ascending order and descending order
Please help 1/7x-3 5/7 > 4/7x-5 6/7
After September 2, 1949, both the United States and the Soviet Union had atomic weapons that they could use in a war against each other. Describe how this fact
Your friend says that 14.5% is equivalent to the decimal 14.5.explain why your friend is incorrect by comparring the fractional equivalents of 14.5% and 14.5.