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

Which graph represents the equation: y = -1/2(2^x)
This element directs the eye - can be horizontal, vertical, diagonal, curvy, zip-zag, and more. It can also be used to separate elements within a design or serv
I need the equation
A clothing store purchases T-shirts for $4.00 each and then marks up the price of each by 55%. What is the markup and new price of each T-shirt?
What is the probability of flipping a coin 12 times and getting heads 3 times? Round your answer to the nearest tenth of a percent. O A. 5.4% O B. 12.5% O C. 12
Why will advertising continue to grow in social media? It is highly cost-effective. It reaches more people than mass media. It is extremely appealing to consum
help very easy 5th grade math im in rush
Which one is correct?
A spinner has six sections: two sections are labeled a comma two sections are labeled B, and two sections are labeled see? a. what is the sample space for the
what value of x will make l || m? 12.5 32.5 40 57.5