SOLUTION: Solve the problem and express the solution in a + bi form (3 - sqrt(-5))*(1 + sqrt(-1))
Algebra
->
Square-cubic-other-roots
-> SOLUTION: Solve the problem and express the solution in a + bi form (3 - sqrt(-5))*(1 + sqrt(-1))
Log On
Algebra: Square root, cubic root, N-th root
Section
Solvers
Solvers
Lessons
Lessons
Answers archive
Answers
Click here to see ALL problems on Square-cubic-other-roots
Question 270046
:
Solve the problem and express the solution in a + bi form
(3 - sqrt(-5))*(1 + sqrt(-1))
Answer by
dabanfield(803)
(
Show Source
):
You can
put this solution on YOUR website!
(3 - sqrt(-5))*(1 + sqrt(-1)) =
3*1 + 3*sqrt(-1) - 1*sqrt(-5) - sqrt(-5*-1)
3 + 3*sqrt(-1) - sqrt(-1*5) - sqrt(5) =
3 + 3*i - i*sqrt(5) - sqrt(5) =
[3-sqrt(5)] + [3-sqrt(5)]*i