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Gía trị của biểu thức A = ( 2x - 5)x(2x +5) - 4 x (x+2)x(x-2) + (10x + 7)
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Gía trị của biểu thức A = ( 2x - 5)x(2x +5) - 4 x (x+2)x(x-2) + (10x + 7)
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Gía trị của biểu thức A = ( 2x - 5)x(2x +5) - 4 x (x+2)x(x-2) + (10x + 7)
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Andreus
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Bài 1: Tính giá trị của biểu thức sau: a) A = 4x – ( x +3)2 + ( x+3)(x-3) với x = - 2,4 b) B = ( 3x +4)2 -10x – 9( x - 4)(4+x) với x = -0,1 c) C = ( x + 5)2 - 2 ( x – 6 )( x+ 6) + ( x+2)( x-4) với x =
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