几道数学二次根号算术题1.2√ 10 ×(-√ 40)2.√ 20a ×√ a^3/5(a≥0)3.√ 0.4 ×√ 3.64.√ x × √ xy^2 (x,y≥0)5.√ 32×2√26.1/2(4√ 3 × 8)
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![几道数学二次根号算术题1.2√ 10 ×(-√ 40)2.√ 20a ×√ a^3/5(a≥0)3.√ 0.4 ×√ 3.64.√ x × √ xy^2 (x,y≥0)5.√ 32×2√26.1/2(4√ 3 × 8)](/uploads/image/z/2577595-67-5.jpg?t=%E5%87%A0%E9%81%93%E6%95%B0%E5%AD%A6%E4%BA%8C%E6%AC%A1%E6%A0%B9%E5%8F%B7%E7%AE%97%E6%9C%AF%E9%A2%981.2%E2%88%9A+10+%C3%97%EF%BC%88-%E2%88%9A+40%EF%BC%892.%E2%88%9A+20a+%C3%97%E2%88%9A+a%5E3%2F5%28a%E2%89%A50%293.%E2%88%9A+0.4+%C3%97%E2%88%9A+3.64.%E2%88%9A+x+%C3%97+%E2%88%9A+xy%5E2+%28x%2Cy%E2%89%A50%295.%E2%88%9A+32%C3%972%E2%88%9A26.1%2F2%284%E2%88%9A+3+%C3%97+8%29)
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