jacquesroberts jacquesroberts
  • 03-04-2014
  • Mathematics
contestada

6x squared plus 12x plus 13 equals 2x squared plus 4

Respuesta :

Аноним Аноним
  • 03-04-2014
[tex]12x^2+12x+3=2x^2+4\\\\12x^2-2x^2+12x+3-4=0\\\\10x^2+12x-1=0\\\\a=10;\ b=12;\ c=-1\\\\\Delta=12^2-4\cdot10\cdot(-1)=144+40=184\\\\x_1=\frac{-b-\sqrt\Delta}{2a};\ x_2=\frac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{184}=\sqrt{4\cdot46}=2\sqrt{46}\\\\x_1=\frac{-12-2\sqrt{46}}{2\cdot10}=\frac{-6-\sqrt{46}}{10};\ x_2=\frac{-12+2\sqrt{46}}{2\cdot10}=\frac{-6+\sqrt{46}}{10}[/tex]
Answer Link

Otras preguntas

Give a counter example to this statement. The quotient of two fractions between 0 and 1 is always a whole number.
Is Glass a good conductor of heat? is Metal a good conductor of heat? is wood a good conductor of heat
How do u do this problem: W/6+5/8=-1 3/8 I got this answer: -1 53/64
why do you use cubic units and not square units to find the volume of solid figures?
why did some people treat native americans so badly?
how are plains formed
Why do you think the governments of the United States and other countries encouraged people on the home front to organized programs for such activities as scrap
'This life is more important than the next' - Discuss statement Include Christian views - Catholic and Church of England
briefly describe the five stages of the cell cycle
briefly describe the five stages of the cell cycle