vsierra9
vsierra9 vsierra9
  • 26-04-2019
  • Mathematics
contestada

how to solve 2x^2 -x -6 =0​

Respuesta :

gmany
gmany gmany
  • 26-04-2019

Answer:

x = -1.5 or x = 2

Step-by-step explanation:

[tex]2x^2-x-6=0\\\\2x^2+3x-4x-6=0\\\\x(2x+3)-2(2x+3)=0\\\\(2x+3)(x-2)=0\iff2x+3=0\ \vee\ x-2=0\\\\2x+3=0\qquad\text{subtract 3 from both sides}\\2x=-3\qquad\text{divide both sides by 2}\\\boxed{x=-1.5}\\\\x-2=0\qquad\text{add 2 to both sides}\\\boxed{x=2}[/tex]

Answer Link

Otras preguntas

What's an improper fraction is equal in mixed numbers 6 4/7
Which set of symptoms describes the short-term effects of amphetamines?
What is the measure of 1 (1 point) 45 60 120 125?
What is 4,080,499 rounded to the nearest thousand?
which of the following terms can be defined as the movement of water across a cell membrane? a- exocytosis b-osmosis c-active tranport d-facilitated diffusion
This scientist focused his study on planetary motion.one of his laws is the planets orbit the sun in elliptical patterns.
A decisive enlargement of his larynx caused jerry's voice to deepen when he was 13 years old. the larynx enlargement best illustrates
in how to eat an ice cream cone when does the author give instructions for taking an ice cream cone from the cashier?
Describe what happens to chromosomes before mitosis.
Hearing protection is required if the noise level at any point in the workday reaches 115 dB and lasts longer than ____________ .