Factor polynomial $$ -w^{2}+4 $$
Answer
$$ -w^{2}+4 = ( -w+2 )( w+2 ) $$
Explanation
Rewrite $ -w^{2}+4 $ as:
$$ -w^{2}+4 = 4 -x^2 = (2)^2 - (w)^2 $$Now we can apply the difference of squares formula.
$$ I^2 - II^2 = (I - II)(I + II) $$After putting $ I = 2 $ and $ II = w $ , we have:
$$ -w^{2}+4 = (2)^2 - (w)^2 = ( -w+2 ) ( w+2 ) $$This page was created using
Polynomial Factoring Calculator