Raymond265768
Raymond265768 Raymond265768
  • 12-06-2018
  • Mathematics
contestada

What are the solutions of 2x^2+8x=-26?

-2+\3i

-2+\i

2+\6i

-3+\2i

Respuesta :

datguiser
datguiser datguiser
  • 12-06-2018
2x^2+8x+26=0

According to the . quadratic formula...

(-8+-[tex] \sqrt{64-4(2)(26)} [/tex])/2=4

64-(4)(2)(26)=-144

[tex] \sqrt{-144} [/tex] = 12i

-8+-12i/4= -2+-3o

Answer A is correct
Answer Link

Otras preguntas

What is the difference between aerospace and aeronautical engineering
Zeema gets paid £13,440 per annum. Assuming she gets paid in equal monthly payments, how much does she earn per month?
The American Revolution created the greatest experiment all time. The idea of government by the people for the People. But we had to win the war for that to hap
someone help me out please Extra points please!
A theater is selling tickets for a musical. One attendee purchased 2 adult tickets and 5 student tickets, and the total cost was $64. Another attendee purchased
Mr Macdonald recorded the test mark for his eight grade class of 25 students he used the marks recorded to calculate the average to be 72 Sandra's marks of 86 w
40 + x + 25= 180 like i either get decimals for this or something that doesn’t at ALL equal 180, so confused.
What is the area of this quadrilateral(Please show a step by step process)
The energy of the sun is converted into usable energy for the cell in the form of ___________________________
What is the area of this figure? Use 3.14 for TT. Please help