jaqueline33 jaqueline33
  • 25-09-2019
  • Mathematics
contestada

-3x² - 4x – 8=0
Does anyone know how to solve this?

Respuesta :

wolf1728
wolf1728 wolf1728
  • 25-09-2019

Answer:

That is a quadratic equation.

It can be solved by using the quadratic formula:

x = (-b +-sqr root b^2 -4*a*c) / 2 *a

In this equation a = -3

b = -4 and c = -8

x = (--4 +- sqr root (-4^2 - 4 * -3 * -8)) / (2 * -3)

x = (4 +- sqr root (16 -96)) / -6

x = 4 +- sqr root (-80) / -6

x1 = (4 +8.94427191 * i)  / -6

x2 =(4 -8.94427191 * i)  / -6

Remember that "i" is the square root of minus 1.

 

Step-by-step explanation:

Answer Link

Otras preguntas

16. The spreading of sound waves around openings in barriers is called A. reverberation. B. an echo. C. diffraction. D. refraction.
Write the quadratic equation whose roots are-1 and 6, and whose leading coefficient is 4 (Use the letter to represent the variable.)?=0
Help me please jem boy wants to make his 8-meter square pool into a rectangular one by increasing its length by 2m and decreasing its width by 2m .jem boy asked
For which system of equations is (2, 2) a solution? A.–3x + 3y = 0x + 6y = 10B.–2x + 5y = –64x – 2y = 4C.5x – 2y = –63x – 4y = 2D.2x + 3y = 104x + 5y = 18
If the supplement of an angle is two-third of itself ,then its supplement is
If the supplement of an angle is two-third of itself ,then its supplement is
what is a group of snakes called?
What was the Battle of Wounded Knee?
what is a group of snakes called?
What was the Battle of Wounded Knee?