Evaluate 18

Evaluate the expression (-4-7i)-(-6-9i) and write the result in the form a+bi (Real + i* Imaginary).


x = (Correct answer is: 2+2i) Wrong answer

Step-by-step explanation:

a=47i b=69i  x=ab  R=4(6)=2 I=7(9)=2  x=2+2i

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