分解因式:x的5次方减x的三次方加x的平方减1

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分解因式:x的5次方减x的三次方加x的平方减1
分解因式:x的5次方减x的三次方加x的平方减1

分解因式:x的5次方减x的三次方加x的平方减1
x的5次方减x的三次方加x的平方减1
=(x的5次方减x的三次方)+(x2 -- 1)
= x 3 (x2 -- 1) + (x2 -- 1)
= (x2 -- 1)(x3 -- 1)
= (x + 1)(x -- 1)(x + 1)(x2 -- x + 1)
=(x -- 1)(x + 1)2 (x2 -- x + 1)
您只需前两项结合、后两项结合,注意提取公因式,
注意平方差、立方差公式.
祝您生活如意!

x的5次方减x的三次方加x的平方减1
=x³(x²-1)+(x²-1)
=(x³+1)(x²-1)
=(x+1)(x²-x+1)(x+1)(x-1)
=(x+1)²(x-1)(x²-x+1)

x^5-x³+x²-1=x³(x²-1)+(x²-1)
=(x²-1)(x³+1)
=(x-1)(x+1)²(x²-x+1)

x^5-x^3+x^2-1
=x^3(x^2-1)+x^2-1
=(x^3+1)(x^2-1)
=(x+1)(x^2-x+1)(x-1)(x+1)
=(x^2-x+1)(x-1)(x+1)^2

x^5-x^3+x^2-1
=x^3(x^2-1)+(x^2-1)
=(x^3+1)(x^2-1)
=(x+1)(x^2-x+1)(x+1)(x-1)

x^5-x^3+x^2-1=x^2(x^3+1)-(x^3+1)=(x^3+1)(x+1)(x-1)=(x+1)^2(x-1)(x^2-x+1)

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