In Exercises 1114, solve the system graphically. 2x y x 5y 106

Funtulis MATH 105 Special Products – 2/8/16 Perfect Square Trinomials: (A + B) = A + 2AB + B 2 2 2 2 (A B) = A 2AB + B 2 2 Ex. Keeping the above formats in mind, factor 9x + 30xy + 25y . (3x + 5y) 2 Difference of Cubes: 3 3 2 2 (A + B ) = (A + B) (A AB + B ) 3 3 2 2 (A B ) = (A – B) (A + AB + B ) Factor: 3 3 3 2 2 2 27 – r → (3) – (r) → (3 – r) (3 + 3r + r ) → (3 – r) (9 + 3r + r ) 9 12 3 3 4 3