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

can I get help is a emergency please
Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73
please help me with german
(Help?) The table shows the relationship between the number of cups of cereal and the number of cups of raisins in a cereal bar recipe: Number of cups of cereal
What is the name of the first president
Will possibly give Brainliest and a high rating. Choose the linear inequality that describes the graph. The gray area represents the shaded region. 4x + y >
Florence Price's Brownies and More sells all types of cookies and pastries. On Tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. Find the sel
For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?
anyone know this? thank you
solve x+3y=6 and 4x-6y=6 by elimination . PLEASE SHOW WORK !!!