write the expression in the form bi, where b is the real number
squareroot-16
squareroot-25
squareroot-3
squareroot-5
3 answers
what is 4i squared? 5i?
√-16
= √-1√16
= 4i
now you do the others the same way.
= √-1√16
= 4i
now you do the others the same way.
sqrt(-16)=sqrt(-1)sqrt(16)=i sqrt(16)=4i
sqrt(-25)=sqrt(-1)sqrt(25)=i sqrt(25)=5i
I think you can see it now. Just remember i=sqrt(-1). And don't forget your properties of sq-roots.
sqrt(-25)=sqrt(-1)sqrt(25)=i sqrt(25)=5i
I think you can see it now. Just remember i=sqrt(-1). And don't forget your properties of sq-roots.