SOLUTION: Please help me simplify: sqrt(-4). i am not grasping the "negatives" yet. thank you. sqrt(-4) = sqrt (-1) * sqrt (4). the sqrt of 4 is 2, so the expression becomes 2 sqrt (-1)

Question 751846: Please help me simplify: sqrt(-4).
i am not grasping the "negatives" yet. thank you.
sqrt(-4) = sqrt (-1) * sqrt (4). the sqrt of 4 is 2, so the expression becomes
2 sqrt (-1). now sqrt (-1) is 'i' an imaginary number. hence the answer is 2i

Answer by malglu(63) (Show Source): You can put this solution on YOUR website!
Please help me simplify: sqrt(-4).
i am not grasping the "negatives" yet. thank you.
sqrt(-4) = sqrt (-1) * sqrt (4). the sqrt of 4 is 2, so the expression becomes
2 sqrt (-1). now sqrt (-1) is 'i' an imaginary number. hence the answer is 2i
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