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

If there are 30 dozen eggs to a case and I have 9370 eggs, about how many cases would I have?
I suck at math please help me
Do you have geometry games?
Determine the 12th term of the sequence 5,15,45
Solve 2|x| = 3 A. {-3/2, 3/2} B. {-1, 1} C. {-2/3, 2/3}
The cost C (in dollars) of making n watches is represented by C=15n+85. How many watches are made when the cost is $385
how many valence electrons does carbon have available for bonding to other atoms a. two b. four c. six d. eight
How much sleep does a Jaguar get in 1 year
daniel le compro una caja de chocolates a su pareja. mientras se dirigia a la casa de su pareja se topo cin un tapón de tráfico lo que lo demoró. durante la es
need help any body please help