Toán Lớp 8: Phân tích đa thức
x ² – x + 1/4
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Toán Lớp 8: Phân tích đa thức
x ² – x + 1/4
Comments ( 2 )
=x^{2} – 1/2 x – 1/2 x + 1/4
=x(x – 1/2) – 1/2(x – 1/2)
=(x – 1/2)(x – 1/2)
=(x – 1/2)^{2}