Is the equation forgetting the bias? (Potential typo)


Is there a typo here for the equation? Because I thought there was supposed to be bias added on both sides, like the equation below. New to Deep Learning so I’m not sure but wanted to reach out in case someone else could give their thoughts.

https://www.codecademy.com/paths/build-deep-learning-models-with-tensorflow/tracks/dlsp-foundations-deep-learning-and-perceptrons/modules/dlsp-introduction-to-deep-learning/lessons/deep-learning-math/exercises/input-journey-in-neural-network

The screenshot equations appear when you hover/click one of the output layer options.

Thank you in advance


Made a mistake, wrong screenshot. Here’s what I’m referring to.

Thank you again