1)若x<2,则x-2___ 0,依据是_______________; 若x>-3,则x+3___0,依据是____________________;若x>-3,则3x___-9,依据是___________________;若x<2,则-2x___-4,依据是__________________.(2)根据(1)的启示,当-3<x<2时,
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1)若x<2,则x-2___ 0,依据是_______________; 若x>-3,则x+3___0,依据是____________________;若x>-3,则3x___-9,依据是___________________;若x<2,则-2x___-4,依据是__________________.(2)根据(1)的启示,当-3<x<2时,
1)若x<2,则x-2___ 0,依据是_______________; 若x>-3,则x+3___0,依据是____________________;
若x>-3,则3x___-9,依据是___________________;
若x<2,则-2x___-4,依据是__________________.
(2)根据(1)的启示,当-3<x<2时,请你化简x-2的绝对值+x+3的绝对值-3x+9的绝对值-4-2x的绝对值
1)若x<2,则x-2___ 0,依据是_______________; 若x>-3,则x+3___0,依据是____________________;若x>-3,则3x___-9,依据是___________________;若x<2,则-2x___-4,依据是__________________.(2)根据(1)的启示,当-3<x<2时,
1)若x<2,则x-2___ 0,依据是____不等式性质1___________;
若x>-3,则x+3___0,依据是______不等式性质1______________;
若x>-3,则3x___-9,依据是_______不等式性质2____________;
若x<2,则-2x___-4,依据是_______不等式性质3___________.
(2)根据(1)的启示,当-3<x<2时,请你化简x-2的绝对值+x+3的绝对值-3x+9的绝对值-4-2x的绝对
x-2的绝对值+x+3的绝对值-3x+9的绝对值-4-2x的绝对
=2-x+x+3-3x-9-4+2x
=-8-x