dmoulthrop5420 dmoulthrop5420 25-03-2018 Mathematics contestada Which set of expressions are not equivalent? 4x(x) + 3(2x) and 4x2 + 6x 5(3x) - 4(3x) and 3x 4(3a) - 2(4a) and 4a2 3(3a) + a(3a) and 3a2 + 9a