SOLUTION: x squared+8x+25=o choose one of the following as the answer A)-4+6i, -4-6i b)4+3i, 4-3i c)4+6i, 4-6i d)-4+3i, -4-3i

Question 116981: x squared+8x+25=o
choose one of the following as the answer
A)-4+6i, -4-6i
b)4+3i, 4-3i
c)4+6i, 4-6i
d)-4+3i, -4-3i
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Let's use the quadratic formula to solve for x:

Starting with the general quadratic

the general solution using the quadratic equation is:

So lets solve ( notice , , and )

Plug in a=1, b=8, and c=25

Square 8 to get 64

Multiply to get

Combine like terms in the radicand (everything under the square root)

Simplify the square root (note: If you need help with simplifying the square root, check out this solver)

Multiply 2 and 1 to get 2

After simplifying, the quadratic has roots of

or

So the answer is D)

RELATED QUESTIONS
(4+3i)-(5+6i) (answered by sprolden)

divide and simplify:... (answered by Gogonati)

write (4+6i)-(5+3i) in a+bi... (answered by nyc_function)

Find all zeros of the function and write the polynomial as a product of linear factors. (answered by ewatrrr)

1. (-2-2)(-4-3i)(7+8i) 2. 5i+7i*i 3. (6i)^3 4. 6i*-4i+8 5. -6(4-6i) 6. (8-3i)^2 7.... (answered by harpazo)

write the expression as a complex number in standord form: (8-i)-(3+2i)+(-4+6i) First (answered by Postulio)

How would I write the following expressions as complex numbers in standard form? -i(4 -... (answered by harpazo)

How do you write the expression (-11+3i)+(4-6i) as a complex number in standard... (answered by jim_thompson5910)

Perform indicated operation and simplify. Write each answer in form of a+bi 1.... (answered by jim_thompson5910)