daisykaitlyn05 daisykaitlyn05
  • 23-05-2020
  • Mathematics
contestada

Write a quadratic equation whose roots are 1+8i and 1-8i

Respuesta :

osikbro
osikbro osikbro
  • 23-05-2020

Answer:

[tex]x^2-2x+65=0[/tex]

Step-by-step explanation:

If the roots of this equation are 1+8i and 1-8i, then:

[tex]x-(1+8i)=0\\x-(1-8i)=0[/tex]

And hence:

[tex]x-1-8i=0\\x-1+8i=0\\(x-1-8i)(x-1+8i)=0\\x^2-x+8ix-x+1-8i-8ix+8i+64=0\\x^2-2x+65=0[/tex]

Hope this helps!

Answer Link

Otras preguntas

plz help me with 9 & 10 ​
-2(1-3x)=22-3(x-13) please help
I need help on this too
GUCTION You had a credit card balance of $186, then you purchased books for $174, CDs for $35, and a pair of shoes for $99 with the credit card. You then made a
arrange and write the integers in increasing order 68,96,-26,38
what are the three north central states in which the capital city is also the largest city
The volume of a cylinder is found by: O A. multiplying the surface area of the triangle by the base B. adding the base and the height C. multiplying the perimet
The dimensions of the base of Box 1 are x by 3x. The base area of Box 1 is
How many states are there
What is -8.10 x 10–3 in standard notation?