Question

What is the simplified form of the expression square root of -64

Answer 1

What is the simplified form of the expression square root of -64

we have

`\sqrt[]{-64}`

Remember that

64=2^6

and

i^2=-1

substitute

`\sqrt[]{-64}=\sqrt[]{(-1)(2^6)}=\sqrt[]{i^2\cdot2^6}=2^3i=8i`

option B