(2√2➖√3)(√2➕2√3)➖√24怎么解?
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解:(2√2➖√3)(√2➕2√3)➖√24等于( 457/1000 ),【即等于0.457】
∵已知需求出(2√2➖√3)(√2➕2√3)➖√24等于多少
∴(2√2➖√3)(√2➕2√3)➖√24
= (2.83 - 1.73)× (1.41 + 3.46) - 4.9
= [(2×100+83)/100 - (1×100+73)/100] × [(1×100+41)/100 + (3×100+46)/100] - (4×10+9)/10
= (283/100 - 173/100)× (141/100 + 346/100) - 49/10
= 110/100 × 487/100 - 49/10
= 5357/1000 - 49/10
= 5357/1000 - 4900/1000
= 457/1000
= 0.457
答:(2√2➖√3)(√2➕2√3)➖√24等于457/1000,【即等于0.457】
∵已知需求出(2√2➖√3)(√2➕2√3)➖√24等于多少
∴(2√2➖√3)(√2➕2√3)➖√24
= (2.83 - 1.73)× (1.41 + 3.46) - 4.9
= [(2×100+83)/100 - (1×100+73)/100] × [(1×100+41)/100 + (3×100+46)/100] - (4×10+9)/10
= (283/100 - 173/100)× (141/100 + 346/100) - 49/10
= 110/100 × 487/100 - 49/10
= 5357/1000 - 49/10
= 5357/1000 - 4900/1000
= 457/1000
= 0.457
答:(2√2➖√3)(√2➕2√3)➖√24等于457/1000,【即等于0.457】
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