21dowlenkatel 21dowlenkatel
  • 12-04-2018
  • Mathematics
contestada

can any one help me and work 2 or 3 of the problems for me to understand it

can any one help me and work 2 or 3 of the problems for me to understand it class=

Respuesta :

MrGumby
MrGumby MrGumby
  • 12-04-2018
To solve these problems you need to use the quadratic formula which is listed below. 

[tex] \frac{-b +/- \sqrt{b^{2} - 4ac } }{2a} [/tex]

So, if you take #2. 

The [tex] x^{2} [/tex] has a 1 in front of it. The x has a -3 in front of it. The last number is also -3. So:

a = 1
b = -3
c = -3

Then you can plug all of these into the equation and simplify. Which gives you:

[tex] \frac{3 -/+ \sqrt{21} }{2} [/tex]

Answer Link

Otras preguntas

Will magnesium oxidize zinc?
How did the political climate in Italy change after unification?a: laws were passed to enhance the political rights of the people.b:There was period of cooperat
please help1-) -35c less than or equal too -5002-) 18> -3g3-)7/-4 less than or equal too 1.64-) t/-2 <-6 5-) -8> k/-0.26-) m/-8 less than or equal too
(x 2 + 4x + 8)(2x - 1)
The simplest sugars are generally called _____. monosaccharides disaccharides polysaccharides
Which sentence is compound? A. They ate the peanut brittle on the car ride home. B. Betsy and her family ate all the peanut brittle on the way ho
It takes Pam 45 minutes to drive to work and 60 minutes to drive home from work. Write the ratio of the time Pam spends driving home from work to the time she
Which of the following are not congruence theorems for right triangles? Check all that apply. A. LA B. HL
what does biodiversity indicate about an ecosystem
Which of the following best defines a hypothesis?