规定一种新的运算,a△b=a*b-a-b+1,如3△4=3x4-3-4+1,比较-3△根号2与根号2

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(-3)△√2
=-3√2-(-3)-√2+1
=-4√2+4
√2△(-3)
=√2*(-3)-√2-(-3)+1
=-3√2-√2+3+1
=-4√2+4
所以(-3)△√2=√2△(-3)