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Earn +20 ptsQ: What is the conjugate of 7 - 2i?
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What is the conjugate of the complex number 7-4i?
To get the conjugate simply reverse the sign of the complex part. Thus conj of 7-4i is 7+4i
What is the complex conjugate of 2-6i?
2+6i
What multiplies to make 3 and adds to make 2?
There are no real numbers that will answer this question, just imaginary numbers. The imaginary numbers are 1+sqrt(-2) and 1-sqrt(-2), which we normally write as 1+2i and 1-2i where i stands for the sort of (-1) (1+2i) + (1-2i) =2 (1+2i) * (1-2i) = 3 (note * stands for multiply)
What is the square-root of 4?
The square root of -4 is 2i: 2i x 2i = 4i2 = 4(-1) = -4
What is the conjugate of 100?
"Conjugate" usually means that in one of two parts, the sign is changed - as in a complex conjugate. If the second part is missing, the conjugate is the same as the original number - in this case, 100.
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