I'm confussed on this problem?

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I'm confussed on this problem?

Which two expression are equivalent?

sqrt-49, -7, -sqrt49

2006-11-03 02:37:59 · 4 answers · asked by Cindy g 1 in Education & Reference ➔ Homework Help

4 answers

-7 and -sqrt49

You can not take a square root of a negative number. Well, you can, but it's called an imaginary number because it can't actually exist.

2006-11-03 02:46:34 · answer #1 · answered by blakenyp 5 · 0⤊ 0⤋

the two equivalent expressions are
-7 and -sqrt49.
sqrt49=7, but -sqrt49=-7

2006-11-03 10:42:33 · answer #2 · answered by MAGNUS 1 · 0⤊ 0⤋

-7 adn -sqrt49

the sqrt-49 is 7i

2006-11-03 10:43:08 · answer #3 · answered by Grover 3 · 0⤊ 0⤋

-7 and -sq.rt49
sq.rt of -49 is imaginary

2006-11-03 10:42:33 · answer #4 · answered by raj 7 · 0⤊ 0⤋