How do you factor $1 - y^2$ ?

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Answer 1 · 2016-03-23T17:24:05

The factorised form is:
$color(blue)((1 +y) (1-y))$

$1 - y^2$

The above expression can be expressed as:
$1 - y^2 = 1^2 - y^2$

$1^2 - y^2 = color(blue)((1 +y) (1-y))$

How do you factor 1 - y^21 - y^2?