Question 1040825
{{{system(x^2/25+y^2/b^2=1,2^2/25+3^2/b^2=1)}}}


{{{system(x^2/25+y^2/b^2=1,4/25+9/b^2=1)}}}


{{{9/b^2=25/25-4/25}}}


{{{9/b^2=21/25}}}


{{{1/b^2=(21/(3*3*25))}}}


{{{1/b^2=7/75}}}


{{{1/b^2=1/(75/7)}}}


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{{{x^2/25=y^2/(75/7)=1}}}