Perform the indicated operation and write your answer in standard form:
2007-04-10 10:52:14 · 9 answers · asked by AJames 1 in Science & Mathematics ➔ Mathematics
Perform the indicated operation & write your answer in standard form which is, a + bi
(-7 + 5i) - (-9 - 11i)
First: eliminate parenthesis > rewrite the expressions excluding the parenthesis.
- 7 + 5i - (-9) - (- 11i)
- 7 + 5i + 9 + 11i
Sec: combine "like" terms.
- 7 + 9 + 5i + 11i
2 + 16i
2007-04-10 10:58:40 · answer #1 · answered by ♪♥Annie♥♪ 6 · 3⤊ 0⤋
Just add like terms and arrange the expression in the form of a + bi.
(-7 + 5i) - (-9 - 11i)
-7 + 5i + 9 + 11i
(9 - 7) + (5i + 11i)
2 + 16i
2007-04-10 10:56:52 · answer #2 · answered by Anonymous · 3⤊ 0⤋
-7+5i+9+11i=
2+16i
2007-04-10 11:02:44 · answer #3 · answered by Anonymous · 1⤊ 0⤋
(-7+5i) - (-9-11i) ... distribute the negative in front of the parenthesis
-7 + 5i + 9 + 11i ... combine like terms
-7 + 9 + 5i + 11i ...
2 + 16i
2007-04-10 10:57:43 · answer #4 · answered by Anonymous · 2⤊ 0⤋
-7+5i-(-9-11i)=
-7+5i+9+11i=
16i+2
2007-04-10 10:57:33 · answer #5 · answered by Dave aka Spider Monkey 7 · 2⤊ 0⤋
= -7-(-9)=2 5i-(-11)= 16i
= 2+16i
2007-04-10 10:58:18 · answer #6 · answered by Nena 3 · 2⤊ 0⤋
2 + 16i
2007-04-10 10:55:51 · answer #7 · answered by Gaurav Kalra 2 · 2⤊ 1⤋
2+16i
2007-04-10 10:55:22 · answer #8 · answered by Anonymous · 2⤊ 1⤋
(-7)-(-9)=2
5i-(-11i)=16i
2+16i
2007-04-10 11:01:58 · answer #9 · answered by Anonymous · 2⤊ 0⤋