Answer:
2i√5
Step-by-step explanation:
Since √-20 is negative and therefore is not a real number, first change it to i√20, to resolve this. Next, find the two closest factors of 20:
1, 20
2, 10
4, 5
Then factor them once again:
2, 2, 5
After this, you get that √20= √2*√2*√5. With this, combine the two √2 to get 2 *√5. Lastly bring back the imaginary letter i, to get 2i√5.
Hope that helps.
