How do you factor $16d^2=4$ ?

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Answer 1 · 2015-05-04T13:10:28

Generally speaking you don't "factor" an equation; you factor an expression.

In this case we can rearrange the equation to have an expression on one side and factor that expression:

$16d^2=4$

$16d^2-4 = 0$

$4(4d^2-1)=0$

$4(d+1)(d-1) = 0$

How do you factor 16d^2=416d^2=4?