tierramarieee5272 tierramarieee5272
  • 15-03-2019
  • Mathematics
contestada

5n2+100=30n , need help explaining how you would work this out

Respuesta :

Аноним Аноним
  • 15-03-2019

Answer:

n = 3 + i√11 ,  3 - i√11

Step-by-step explanation:

This is a quadratic equation  and the first step is to write it in standard form:

5n^2 - 30n + 100 = 0

Divide through by 5:

n^2 - 6n + 20 = 0

Completing the square:-

(n - 3)^2 - 9 + 20 = 0

(n - 3)^2 = -11

n - 3 = i√11 or - i√11

n = 3 + i√11 ,  3 - i√11

(2 complex roots).

Answer Link

Otras preguntas

Solve the system of equations below. x - 2y=3 2x - 3y=9 A. (-9,3) B. (3,9) C. (-3,9) D. (9,3)
Which activity helps develop muscular endurance?
How does the amount of mercury change, moving up the food chain?
what is the answer??? Find |-58|. 58 -58 0
what do you call the tiny hair that filters the air though the nose? A.cilia B.throat C.air sacs D.mucus membrane
AP Macro Topic 1.3 Comparative Advantage and Trade Part 1 - Mastering Skills- Answer the following questions to verify that you fully understand opportunity cos
The center of an ellipse is (-9,3). one focus is (-7,3). The major axis is 24 units long. What is the equation of the ellipse in standard form?I got as far as (
government websites and archives are good places to search for
4) A triangle has a base length of 2.5 cm and corresponding height 4.5 cm, correct to 3 significant figures. Calculate the lower bounds and upper bounds of the
What is the y-intercept of the function f(x)=4 – 5x? –5 –4 4 5