2006-06-15 14:40:04 · 13 answers · asked by Br 3 in Science & Mathematics ➔ Mathematics
square root (-49)
=square root (-1*49)
=square root (-1)*square root (49)
=i*7
=7i
where i=square root(-1).
2006-06-15 19:48:17 · answer #1 · answered by chan_l_u 2 · 1⤊ 0⤋
Since you can't take the square root of a negative number, you have to use the imagine number, i.
square root of -49 = i*square root of 49
since the square root of 49 = 7, then ur final simplified answer is i7 or 7i
2006-06-15 15:09:43 · answer #2 · answered by AnGeL 4 · 0⤊ 0⤋
Factor -49 into -1*49. Now distribute the square root function; square root of 49 times the square root of -1. The square root of 49 is 7, and the square root of -1 is i, so you get 7i.
2006-06-15 14:44:12 · answer #3 · answered by PhysicsPat 4 · 0⤊ 0⤋
Well, again under which field?
In the set of real numbers there is no square root. If we extend it to complex numbers we get two square roots, +7i and -7i Where i is one solution to
x^2+ 1 =0
2006-06-15 14:44:35 · answer #4 · answered by Atul S V 2 · 0⤊ 0⤋
7 * square root of -1
2006-06-15 15:17:07 · answer #5 · answered by coolpowwow80 3 · 0⤊ 0⤋
7 i
2006-06-15 14:42:09 · answer #6 · answered by silvi^e 4 · 0⤊ 0⤋
7 i <-- the i is an imaginary number, which is equal to the square root of -1 ... :)
2006-06-15 14:52:24 · answer #7 · answered by Sci-Buff 4 · 0⤊ 0⤋
7i it is an imaginary number
2006-06-15 14:45:27 · answer #8 · answered by jessec 2 · 0⤊ 0⤋
±7i where i is defined to be SQRT (-1)
2006-06-15 14:42:33 · answer #9 · answered by cat_lover 4 · 0⤊ 0⤋
7i
2006-06-15 14:41:52 · answer #10 · answered by Cosmin C 2 · 0⤊ 0⤋