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Simplify.\newline4⋅5i4 \cdot 5i \newlineWrite your answer in the form a+bia + bi.

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Full solution

Q. Simplify.\newline4⋅5i4 \cdot 5i \newlineWrite your answer in the form a+bia + bi.
  1. Simplify:Multiply the real number by the imaginary number.
  2. Calculation:Multipliy 44 and 55, then write the result in front of ii.
    4⋅5i=20i4 \cdot 5i = 20i

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