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

Do the multiplication:

(0.3 a + b^{2}) \cdot (0.09 a^{2} - 0.3 a b^{2} + b^{4})

Answer:

i a^{3} i b^{i}

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

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