Practice problem
Simplify (x+3z)(3y+x)(x+3z)(3y+x)(x+3z)(3y+x)
x2+81xzyx^2+81xzyx2+81xzy
3xy+x2+9zy+3xz3xy+x^2+9zy+3xz3xy+x2+9zy+3xz
x2+15szyx^2+15szyx2+15szy
x2+3xyz+3zyx^2+3xyz+3zyx2+3xyz+3zy
Type a concept, like “slope” or “photosynthesis”.
