2007-12-20 10:19:59 · 5 answers · asked by Jasmine 1 in Science & Mathematics ➔ Mathematics
It's a complex number, Z = a +bi
Work with Real by Real, Imaginary by Imaginary
(8 - 3i) - 2*(8 - 4i)
(8 - 3i) + (-16 + 8i)
(-8 + 5i) = Z
2007-12-20 10:23:30 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Simplifying
(8 + -3i) + -2(8 + -4i)
Remove parenthesis around (8 + -3i)
8 + -3i + -2(8 + -4i)
8 + -3i + (8 * -2 + -4i * -2)
8 + -3i + (-16 + 8i)
Reorder the terms:
8 + -16 + -3i + 8i
Combine like terms: 8 + -16 = -8
-8 + -3i + 8i
Combine like terms: -3i + 8i = 5i
-8 + 5i
Final result:
-8 + 5i
2007-12-20 10:26:02 · answer #2 · answered by Anonymous · 1⤊ 0⤋
(8-3i)-2(8-4i) =
(8-3i)-2*8 +2*4i =
(8-3i)-16+8i =
(8-16) + (8i-3i) =
-8 + 5i
2007-12-20 10:26:59 · answer #3 · answered by maegical 4 · 0⤊ 0⤋
8-3i-16+8i
5i-8
2007-12-20 10:22:38 · answer #4 · answered by Omega 3 · 0⤊ 0⤋
8 - 3i - 16 + 8i
5i - 8
- 8 + 5i
2007-12-24 07:40:08 · answer #5 · answered by Como 7 · 0⤊ 0⤋