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AleksAgata [21]
3 years ago
11

20i + 5i=a.15ib.25ic.20i

Mathematics
2 answers:
navik [9.2K]3 years ago
8 0
Its B. 25i i hope this help u :)
Volgvan3 years ago
7 0
20i + 5i = 25i B
when a number has an "I" in it it is an imaginary number. You get an imaginary number by taking a square root of a negative number. (or other even index root) For example: sqrt-4= +-2i
You would add and subtract these just like any other like terms. 20x + 5x = 25x
Where imaginary numbers differ is when !multiplying and dividing. i * i = -1
I hope this helps.
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sattari [20]

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