• Choice H

    Expand each term using i2=1i^2 = -1:

    First term: 2i(3+4i)-2i(3 + 4i)

    =6i8i2=6i8(1)=6i+8=86i= -6i - 8i^2 = -6i - 8(-1) = -6i + 8 = 8 - 6i

    Second term: 3(2+5i)-3(2 + 5i)

    =615i= -6 - 15i

    Combine:

    =(86i)+(615i)= (8 - 6i) + (-6 - 15i)

    =(86)+(615)i= (8 - 6) + (-6 - 15)i

    =221i= 2 - 21i

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