Pizzapegasus1 Pizzapegasus1 21-06-2018 Mathematics contestada 1. Multiply. x X x³. 2. Multiply. T9 x t4 x t8 T21 T13 T12 T44 3. Use estimation to determine whether the result is reasonable or not. 351.23 + 3.71 Results: 354.833 Reasonable or Not reasonable 4. Simplify the expression by combining like terms. -8x - 4x -4x 32x -12 + x -12x