Question 366752
{{{2x^4-5x^2-12=0}}}
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{{{2x^4-8x^2+3x^2-12=0}}}
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{{{2x^2(x^2-4)+3(x^2-4)=0)}}}
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{{{(x^2-4)(2x^2+3)=0}}}
{{{(x+2)(x-2)(2x^2+3)=0}}}
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x=-2,2
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