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18. The product of the sum of two numbers by the incomplete square of their difference

Do the multiplication:

(0.4 s + t^{5}) \cdot (0.16 s^{2} - 0.4 s t^{5} + t^{10})

Answer:

i s^{3} i t^{i}

Enter numbers and signs in separate windows; enter the powers in windows next to variables.

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