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

Question

6494 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-03-23T17:24:05

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

$1 - y^{2}$ $1 - y^2$

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

as per property :
$a^{2} - b^{2} = (a + b) (a - b)$ $color(blue)(a^2 - b^2 = (a+b)(a-b)$

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

How do you factor 1−y21 - y^2?