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

Toán Lớp 9: √(25- x2 ) bày cho mình cách làm vs

Toán Lớp 9: √(25- x2 ) bày cho mình cách làm vs

Comments ( 2 )

  1. \sqrt{25 – x^2}
    = \sqrt{5^2 – x^2}
    = \sqrt{(5 – x)(5 + x)}

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

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