can someone help me I have to solve in the form of a + bi: (2 - 7i) - (9 + 2i)?

0 ⤊

2007-12-02 14:16:18 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

2- 9 = -7
-7i - 2i = -9i

so -7 -9i is the answer

2007-12-02 14:19:58 · answer #1 · answered by Steve A 7 · 0⤊ 0⤋

2-9=-7 -7i-2i=-9i
-7-9i

2007-12-02 22:29:46 · answer #2 · answered by crazy4dandy 1 · 0⤊ 0⤋

Collect like terms as you always do.

a+bi-c-di = (a-c)+(b-d)i.

2007-12-02 22:20:30 · answer #3 · answered by Eric E 2 · 0⤊ 0⤋