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How do you simplify $3i+i$ ?

1 Answer

Oct 26, 2016

$3i+i=color(green)(4i)$

Explanation:

$3i+i$
$color(white)("XXX")=(3xxi) + (1xxi)$

$color(white)("XXX")=(3+1)xxi$

$color(white)("XXX")=4i$

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