Practice problem
Factor x2+5x−84x^{2}+5x-84x2+5x−84 as (x+m)(x−n)(x+m)(x-n)(x+m)(x−n), where mmm and nnn are positive numbers. What is m2+3nm^{2}+3nm2+3n?
858585
165165165
123123123
131313
Type a concept, like “slope” or “photosynthesis”.
