Try another version of this question Factor completely: `r^4-21r^2+80` Box 1: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c Be sure your variables match those in the question `(r^2-5)(r+4)(r-4)`
Try another version of this question
Box 1: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c Be sure your variables match those in the question