mistyfair mistyfair
  • 03-11-2018
  • Mathematics
contestada

Factor 15z^2+17z-18 please show work

Respuesta :

juliasobaski101 juliasobaski101
  • 03-11-2018

There is no common factor between 15, 17 and 18 because 17 is prime.  

15z² +17z - 18 =  

d = 17² - 4.15.-18  

d = 289 + 1080  

d = 1369  

z = (-17 +/- \/1369) : 2 * 15  

z = (-17 + 37) : 30  

z' = 20 : 30 = 2/3  

z" = (-17 - 37) : 30  

z" = -54 : 30 = -1.8  

<><

Answer Link

Otras preguntas

The prime factorization of 76 is _____.
What term describes a white southerner who supported northern Reconstruction policies after the Civil War? a.carpetbagger b.radical c.scalawag d.unionist
Evaluate the surface integral. s x2 + y2 + z2 ds s is the part of the cylinder x2 + y2 = 4 that lies between the planes z = 0 and z = 3, together with its top a
What is the solution set of this system of equations? y = x2 − 3x − 4 x = y + 8
"The Lady of Shalott" is ___, which is most often used to narrate a story in poetic form. A.) a ballad B.) a problem play C.) a novel of manners D.) an ode
convert 70% into a fraction
What is the common structure that links all of the Cinderella stories called?
Help me pls!! Help me!
Which statement is true about the data set?
What is the difference between private and public company