Question 368925
{{{(r-2t)^3+(r+3t)^3 }}}
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{{{(r-2t+r+3t)((r-2t)^2 -(r-2t)(r+3t)+(r+3t)^2)}}}
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{{{(2r+t)(r^2-4rt+4t^2-(r^2+rt-6t^2)+(r^2+6rt+9t^2))}}}
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{{{(2r+t)(r^2-4rt+4t^2-r^2-rt+6t^2+r^2+6rt+9t^2)}}}
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{{{(2r+t)(r^2-r^2+r^2-4rt-rt+6rt+4t^2+6t^2+9t^2)}}}
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{{{(2r+t)(r^2+rt+19t^2)}}}
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