gtafolla1203
gtafolla1203 gtafolla1203
  • 01-03-2015
  • Mathematics
contestada

How do I solve 5x^2-5x-30=0 ?

Respuesta :

rfanfiction
rfanfiction rfanfiction
  • 01-03-2015
You can factor out a 5 from the equation since all of the numbers are divisible by 5
5(x^2-x-6=0)
Factor into two binomials
5(x-3)(x+2)=0
Because of the zero product property, we know that one of the two binomials (in parenthesis) must equal 0.
x-3=0 and x+2=0
Solve each INDIVIDUALLY to find the values of x
x= 3 AND x= -2

Answer Link
konrad509
konrad509 konrad509
  • 01-03-2015
[tex] 5x^2-5x-30=0\\ 5(x^2-x-6)=0\\ 5(x^2-3x+2x-6)=0\\ 5(x(x-3)+2(x-3))=0\\ 5(x+2)(x-3)=0\\ x=-2 \vee x=3 [/tex]
Answer Link

Otras preguntas

Explain how electromagnetic waves can be used to measure distances of components in the universe.
Why do you think the Inca required everyone in their society to do a specific job? Do you think this is a good idea for a society? Explain.
Describe five major methods of managing waste. why do we practice waste management
If a lake is 60 miles away and im driving 40 mph the entire way how long will it take me to get to the lake?
There are 12 people in Mrs. Hilt's living room. 6 people are wearing socks and 4 people wearing shoes. 3 people are wearing both. How many people are bare feet?
the book the giver: What is Jonas first disturbing memory? How does react?
Activity 1.1.1-how the universe came to be
Evaluate 6 exponent 3+ 7 x 4
Why was Birmingham chosen as the site for a major civil rights campaign?
Why do you think monroe opposed the admittance of missouri to the union