The conjugate of a complex number is formed by changing the sign of the imaginary part. For the complex number 10 + 3i, its conjugate is 10 – 3i.
In more detail, if you have a complex number represented as a + bi, where a is the real part and b is the imaginary part, the conjugate is a – bi. This transformation is useful in various mathematical operations, especially when dividing complex numbers, as it helps to eliminate the imaginary part from the denominator.