nicholeashleyj1 nicholeashleyj1
  • 21-09-2017
  • Mathematics
contestada

Solve 2x2 + 3x – 7 = x2 + 5x + 39 for x.

Respuesta :

AnimeArtistLife
AnimeArtistLife AnimeArtistLife
  • 21-09-2017
2x² + 3x - 7 = x² + 5x + 39

*Subtract x² + 5x + 39 from both sides*

x² - 2x - 46 = 0

Then, use the quadratic formula with a=1, b=-2, c=-46.

x = 1+/- √47. (Written 1 plus or minus the square root of 47)
Answer Link

Otras preguntas

Destaque uma característica surrealista de cada um dos textos. Texto - Anexado em imagem.
Randy's bicycle tire has a diameter of 42 ccentimeters. Which is the closest to the circumference of one of the tires? Use 3.14 for π​
Which departments handle both economic and social issues? Public safety, education natural resources, transportation education, natural resources transportation
x+y=70 65x+15y=2400 solve by substitution please show work very important thank you so much
when driving at night and you encounter curves what do you have to remember​
Evaluate g(x)= 2/3x + 7 For x=9 A. 9 B. 25 C. 12.5 D. 13
what is n Question options: 1.25 10 2.5 5
who is considered one of the greatest rulers in history​
View cache files google chrome
Solve the equation for x by graphing -2^x+3=-3^(- x)-2