Question 364870
{{{f(x)=9x^4-25x^2=0}}}
{{{x^2(9x^2-25)=0}}}
{{{x^2(3x-5)(3x+5)=0}}}
Three solutions:
{{{highlight(x=0)}}}
.
.
.
{{{3x-5=0}}}
{{{3x=5}}}
{{{highlight(x=5/3)}}}
.
.
.
{{{3x+5=0}}}
{{{3x=-5}}}
{{{highlight(x=-5/3)}}}