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Let r,sr,sr,s and ttt be the roots of x3+xA+x2A+A=0x^3+ x\sqrt{A} + x\sqrt{2A} + A =0x3+xA+x2A+A=0. Find (r+s+t)(r+s−t)r2+s2−t2+2rs \frac{(r+s+t)(r+s-t)}{r^2+s^2-t^2+2rs}r2+s2−t2+2rs(r+s+t)(r+s−t) where 100≤A≤−100 100 \leq A \leq -100100≤A≤−100.
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