Solving systems of equations using substitution with both equations in y=mx+b PLZ HELP ME PLZZZ

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Plz 20 points polynomials 1: subtract and simplify (–y^2 – 4y – 8) – (–4y^2 – 6y + 3) 2: multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2 3: multiply and simplify (x – 4) (x2 – 5x – 6)

Kite abcd represents a softball field that is being built. if ac = 48 meters, what is the perimeter of the field?