Toán Lớp 8: Phân tích đa thức thành nt :
1,x^2(x-1)+y^2(1-x)
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Toán Lớp 8: Phân tích đa thức thành nt :
1,x^2(x-1)+y^2(1-x)
Comments ( 2 )
x^2.(x-1)+y^2.(1-x)
=x^2.(x-1)-y^2.(x-1)
=(x-1).(x^2-y^2)
=(x-1).(x-y).(x+y)
Answer
x^2 . (x – 1) + y^2 . (1 – x)
= x^2 . (x – 1) – y^2 . (x – 1)
= (x^2 – y^2) . (x – 1)
= (x – y) . (x + y) . (x – 1)