Anyone knows how to solve this problem?
Find all solutions of the equation and express them in form of a+bi
1.x² + 9 = 0
2.9x² + 4 = 0
3.x² +1/2x + 1 = 0
I really have no idea what to do..
Thanks in advance!
Anyone knows how to solve this problem?
Find all solutions of the equation and express them in form of a+bi
1.x² + 9 = 0
2.9x² + 4 = 0
3.x² +1/2x + 1 = 0
I really have no idea what to do..
Thanks in advance!
Do you not know how to take square roots? If then and you take the square root of both sides.
If , then , . Of course, you need to know that the square root of -1 is "i".
For the last one, I presume that is . Do you know the "quadratic formula"? If , then . Here a= 1, b= 1/2, c= 1. .