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How do you simplify $3 i + i$ $3i+i$ ?

1 Answer

Oct 26, 2016

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

Explanation:

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

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

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

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