what is (x+3)(3x+10)
(x+3)(3x+10) is X (3x +10) + 3(3x+10) or 3x2 + 10x +9x+30. "F.O.I.L" method...first, outside, Inside, Last.
Final answer combining the like terms in the middle: 3x2 + 19x + 30
