MariH MariH
  • 03-05-2014
  • Mathematics
contestada

solve for x: 2x^2+4x-16+=0

Respuesta :

marmal
marmal marmal
  • 03-05-2014
[tex]2x^2+4x-16=0|:2\\ x^2+2x-8=0\\ \Delta=36\Rightarrow\sqrt{\Delta}=6\\ x_1=\frac{-b+\sqrt{\Delta}}{2a}\ \vee\ x_=\frac{-b-\sqrt{\Delta}}{2a}\\ x_1=2\ \vee\ x_2=-4[/tex]
Answer Link
kate200468
kate200468 kate200468
  • 03-05-2014
[tex]2x^2+4x-16=0\ /:2\\ \\x^2+2x-8=0\\ \\x^2-2x+4x-8=0\\ \\x(x-2)+4(x-2)=0\\ \\(x-2)(x+4)=0\ \ \ \Leftrightarrow\ \ \ x-2=0\ \ \ \vee\ \ \ x+4=0\\ \\.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x=2\ \ \ \ \ \ \ \ \ \ \ \ \ \ x=-4[/tex]
Answer Link

Otras preguntas

Laura just finished a new book about a time-traveling magician. She read the same amount every day and completed the book in just 10 days! The book had 85 pages
hii please help me!!!!!
Please help me with this question Después de comprar los boletos, tengo que ________ mis maletas en el mostrador. atrasar despegar facturar navegar
Which statement best completes the diagram? More Europeans move to the United States in the 1800s
1. 1 +2r = 2. 12 = 18 - d 3. 5b + 10 = 30
Why is ATP so useful for cellular energy
3.-Dibuja como crees que era el personaje del que menciona el texto. Español
Simplify the following expression: 2(x+7) - (x+2)
DIRECTION VARIATION PLS HELP ME WITH THIS !!!!
A single-stranded DNA molecule has the sequence TCAACTTGA. The equivalent sequence in an RNA molecule would be ________.