3i divided by 4 plus 7i
2007-01-21 17:37:28 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Find a common denominator: 28i/4 + 3i/4 = 31i/4
2007-01-21 17:41:29 · answer #1 · answered by Sarah 5 · 0⤊ 0⤋
Just the same if it were 3/4 + 7, create a common denominator:
3i/4 + 7i = 3i/4 + 28i/4 = 31i/4
2007-01-21 17:41:38 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Multiply numerator and denominator by technique of the conjugate of the denominator 3i/(4+7i) = 3i(4-7i)/(4+7i)(4-7i) = (12i -21i^2)/ (16-49i^2)= (21+12i)/sixty 5 because i^2 = -a million =21/sixty 5 +(12/sixty 5)*i
2016-12-02 21:22:19 · answer #3 · answered by cottom 4 · 0⤊ 0⤋
find a common dominator- 3i/4+4(7i)/4= 3i/4 + 28i/4
31i/4 i.e i = 4/3
2007-01-21 18:16:22 · answer #4 · answered by savita p 1 · 0⤊ 0⤋
Carry the 9.
2007-01-21 17:44:51 · answer #5 · answered by Da Bears 2 · 0⤊ 0⤋
the common denominator is 4
3i/4 + 7i/1
3i + 28i
----------------- = 31i/4
4
2007-01-21 17:44:15 · answer #6 · answered by bochevik 2 · 0⤊ 0⤋