Question 326987
Factor completely:
{{{49y^2-49w^2}}}
{{{49(y^2-w^2)}}}
this is of the form {{{a^2-b^2 = (a+b)(a-b)}}}
{{{49(y+w)(y-w)}}}

Factor completely:
y^4-23y^2-50
{{{y^4-25y^2+2y^2-50}}}
{{{y^2(y^2-25)+2(y^2-25)}}}
{{{(y^2-25)(y^2+2)}}}
{{{(y+5)(y-5)(y^2+2)}}}