Question 164492
{{{ 5x^2+5x=20 }}}
{{{ 5x^2+5x-20=0 }}} So far, so good.
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Factor out a 5:
{{{ 5(x^2+x-4)=0 }}}
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That's as far as you can go.  To solve you would need the apply the "quadratic equation".
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Doing so, would yield:
x = {1.562, -2.562}
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*[invoke quadratic "x", 1, 1, -4 ]