Toán Lớp 8: Phân tích thành nhân tử
$x^2(x-1)+y^2(1-x)$
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Toán Lớp 8: Phân tích thành nhân tử
$x^2(x-1)+y^2(1-x)$
Comments ( 2 )
=x^2(x-1)-y^2(x-1)
=(x-1)(x^2-y^2)
=(x-1)(x-y)(x+y)
x².(x–1)+y²(1–x)
= x²(x–1)–y²(x–1)
= (x–1)(x²–y²)
= (x–1)(x–y)(x+y)
=> Đáp án: (x–1)(x–y)(x+y)