Question 1132136
{{{3x^3+75x+2x^2-50=0}}}


{{{3(x^3+25x)+2(x^2-25)=0}}}


{{{3x(x^2+25)+2(x^2-25)=0}}}


If Rational Root Theorem did not help, either try a numerical method or a graphing tool.  There is one real root near about 0.65.