Question 224810
(-2t)^2 (3t^5)^2
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(-2)^2 * t^2 *3^2 *(t^5)^2
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+4 *t^2 *9 * t^10
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36 *t^2 * t^10
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36 *t^(2+10)
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36 t^12
.
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check,,  let  t=2,,,for  original  and  answer = 147,456
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