Question

Why is it on the left equation a positive result and on the right side, an negative result?

Answer 1

`{( - x)}^(4) = {( - 1)}^(4) {x}^(4) = {x}^(4)`

`{( - b)}^(19) = {( - 1)}^(19) {b}^(19) = - {b}^(19)`