Question 821300
{{{(3 + (-7*(14y^3)^(1/4)))(3 - (-7*(14y^3)^(1/4)))}}}
={{{3^2-(-7*(14y^3)^(1/4))^2}}}
={{{9-(-7)^2*((14y^3)^(1/4))^2}}}
={{{9-49*(14y^3)^((1/4)*2)}}}
={{{9-49*(14y^3)^(1/2)}}}
={{{9-49*(14)^(1/2)*(y^3)^(1/2)}}}
={{{9-49sqrt(14)y^("3/2")}}}
={{{9-49sqrt(14)y*sqrt(y)}}}