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

Toán Lớp 9: ab + b√a + √a + 1 ( với a>=0 )

Toán Lớp 9: ab + b√a + √a + 1 ( với a>=0 )

Comments ( 2 )

  1. ab+b\sqrt{a}+\sqrt{a}+1(a>=0)
    =(ab+b\sqrt{a})+(\sqrt{a}+1)
    =b\sqrt{a}(\sqrt{a}+1)+(\sqrt{a}+1)
    =(\sqrt{a}+1)(b\sqrt{a}+1)

  2. Giải đáp:
    ab + b\sqrt{a} + \sqrt{a} + 1 ( a≥ 0)
    = (\sqrt{a})^2 b + b\sqrt{a} + \sqrt{a} + 1
    = b\sqrt{ a} ( \sqrt{ a} + 1) + (\sqrt{a} + 1)
    = ( b\sqrt{a} + 1)( \sqrt{a} + 1)

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