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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 9: 3/2×√32-2/5×√50-1/2×√1/2 Rút gọn

Toán Lớp 9: 3/2×√32-2/5×√50-1/2×√1/2
Rút gọn

Comments ( 2 )

  1. Giải đáp:
    -4 + 4\sqrt{2}
    Lời giải và giải thích chi tiết:
    3/2 xx \sqrt{32} – 2/5 xx \sqrt{50} – 1/2 xx \sqrt{1/2}$\\$ = 3/2 xx 4\sqrt{2} – 2/5 xx 5\sqrt{2} – 1/2 xx \sqrt{2}/2= 6\sqrt{2} – 2\sqrt{2} – \sqrt{2}/4$\\$ = 4\sqrt{2} – \sqrt{2}/4 = -4 + 4\sqrt{2}$\\$
    chúc bạn học tốt T^T

  2. 3/2 xx \sqrt{32} – 2/5 xx \sqrt{50} – 1/2 xx \sqrt{1/2}
    = 3/2 xx 4\sqrt{2} – 2/5 xx 5\sqrt{2} – 1/2 xx \sqrt{2}/2
    = 6\sqrt{2} – 2\sqrt{2} – \sqrt{2}/4
    = 4\sqrt{2} – \sqrt{2}/4
    = -4+4\sqrt{2}

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222-9+11+12:2*14+14 = ? ( )