Question

Find all solutions of the equation and express them in the form a + bi.
x^2 − 5x + 7 = 0

Answer 1

http://www.wolframalpha.com/input/?i=x%5E2+%E2%88%92+5x+%2B+7+%3D+0

Answer 2

standard form is
\[\frac{5}{2}+\frac{\sqrt{3}}{2}i\]and its conjugate
\[\frac{5}{2}-\frac{\sqrt{3}}{2}i\]

Answer 3

the a+bi for is also known as rectangular form. if you have a graphing calc you can type in your equation hit math go over to complex numbers and there is an option between polar and rectangular. pick rectangular.