algebra

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4i(2+i) + 2i(4i-1)
8i +41^ +8i^-2i
12i^+6i

  • algebra -

    what you meant in your second line was:

    8i + 4i^2 + 8i^2 - 2i
    = 6i + 12i^2
    = 6i + 12(-1)
    = 6i - 12

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