若定义一种新的运算“#”,a#b=a-2b,例如:2#5=2-2×5=2-10=-8,请计算:(10#4)#(6#2)的值
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![若定义一种新的运算“#”,a#b=a-2b,例如:2#5=2-2×5=2-10=-8,请计算:(10#4)#(6#2)的值](/uploads/image/z/1103924-20-4.jpg?t=%E8%8B%A5%E5%AE%9A%E4%B9%89%E4%B8%80%E7%A7%8D%E6%96%B0%E7%9A%84%E8%BF%90%E7%AE%97%E2%80%9C%23%E2%80%9D%2Ca%23b%3Da-2b%2C%E4%BE%8B%E5%A6%82%EF%BC%9A2%235%3D2-2%C3%975%3D2-10%3D-8%2C%E8%AF%B7%E8%AE%A1%E7%AE%97%EF%BC%9A%2810%234%29%23%286%232%29%E7%9A%84%E5%80%BC)
若定义一种新的运算“#”,a#b=a-2b,例如:2#5=2-2×5=2-10=-8,请计算:(10#4)#(6#2)的值
若定义一种新的运算“#”,a#b=a-2b,例如:2#5=2-2×5=2-10=-8,请计算:(10#4)#(6#2)的值
若定义一种新的运算“#”,a#b=a-2b,例如:2#5=2-2×5=2-10=-8,请计算:(10#4)#(6#2)的值
(10#4)#(6#2)
=(10-10×4)#(6-6×2)
=(-30))#(-6)
=(-30)-(-30)×(-6)
=(-30)-180
=-210