一道八年级上的二次根式计算题-2²×√8+3√2(3-2√2)-1/(1+√2)
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一道八年级上的二次根式计算题-2²×√8+3√2(3-2√2)-1/(1+√2)
一道八年级上的二次根式计算题
-2²×√8+3√2(3-2√2)-1/(1+√2)
一道八年级上的二次根式计算题-2²×√8+3√2(3-2√2)-1/(1+√2)
-2²×√8+3√2(3-2√2)-1/(1+√2)
=-4*2√2+9√2-12-(√2-1)
=-8√2+9√2-12-√2+1
=-11
-2²×√8+3√2(3-2√2)-1/(1+√2)
=-4*2√2+9√2-12-(√2-1)
=-8√2+9√2-12-√2+1
=-11
=-4×2√2+9√2-12-(√2-1)
=-8√2+9√2-12-√2+1
=-11