Question 361888
{{{y=x^5-14x^3+49x}}}
{{{y=x(x^4-14x^2+49)}}}
{{{y=x(x^2-7)^2}}}
Two solutions:
{{{highlight(x=0)}}}
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{{{x^2-7=0}}}
{{{x^2=7}}}
{{{highlight(x=0 +- sqrt(7))}}}
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