## evergirl Group Title A fraction has a denominator of 3 + 4i. What is multiplied with the fraction to rationalize the fraction? one year ago one year ago

1. srossd

To get a real number out of an imaginary number, you multiply by its conjugate. The conjugate of a+bi is a-bi, so the conjugate of 3+4i is 3-4i. So, you multiply by $\frac{3-4i}{3-4i}$ to rationalize it.

2. WhyAmIAlive-Drake

good job

3. evergirl

Thanks!