Seudónimo
Seudónimo
03-07-2014
Mathematics
contestada
Solve the quadratic by factoring 2X²-2X-12=0
Respuesta :
konrad509
konrad509
03-07-2014
[tex]2x^2-2x-12=0\\ 2(x^2-x-6)=0\\ 2(x^2-3x+2x-6)=0\\ 2(x(x-3)+2(x-3))=0\\ 2(x+2)(x-3)=0\\ x=-2 \vee x=3[/tex]
Answer Link
Аноним
Аноним
03-07-2014
[tex]2x^2-2x-12=0\\\\2x^2+4x-6x-12=0\\\\2x(x+2)-6(x+2)=0\\\\(x+2)(2x-6)=0\iff x+2=0\ \vee\ 2x-6=0\\\\x=-2\ \vee\ x=3[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 91+ )
Otras preguntas
what did the supreme court say in its ruling in regents of the university of california v. bakke
Which of the following statements represents a productive way to maintain a horizontal relationship?
What was the effect of the "Trail of Tears" on Native Americans? It helped end the American-Indian War. They were forced to move into Indian Territory. Nativ
1. Multiply (2x + 3)(x + 4) 2.Multiply (3x + 5) (x - 8) Use ^ to indicate an exponent 3. 2. Multiply: (4c - 9)(c2 + c - 7) A. 4c3 + 63 B. 4c3 - 5c2 - 37c + 63
(a) 7.5% of what number is 7.38? (b) what percent of 12.5 is 39
a cube of gold (density = 19.3 g/cm cubed) is measured and the length of its side is 5.00 cm. what is the mass of the cube?
what is the solution set of the equation (x -2) (x-a) = 0 ?
Describe what normally happens to a persons blood sugar level soon after he or she needs a meal that contains carbohydrates
When society changes in response to its environment, the social structure and the culture both change at the same rate?
The force exerted on a surface by the weight of the air above it is what
