1、(1/2)x^2-(1/2)y^2+(3/2)x-(7/2)y-52、2x^(n+6)-10x^(n+3)-4x^n+10x^(n-3)+2x^(n-6)

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1、(1/2)x^2-(1/2)y^2+(3/2)x-(7/2)y-52、2x^(n+6)-10x^(n+3)-4x^n+10x^(n-3)+2x^(n-6)
1、(1/2)x^2-(1/2)y^2+(3/2)x-(7/2)y-5
2、2x^(n+6)-10x^(n+3)-4x^n+10x^(n-3)+2x^(n-6)

1、(1/2)x^2-(1/2)y^2+(3/2)x-(7/2)y-52、2x^(n+6)-10x^(n+3)-4x^n+10x^(n-3)+2x^(n-6)
1、=1/2[(x+y)(x-y)+3x-7y-10]
=1/2(x+y+5)(x-y-2)

2、=2x^(n-6) [x^12-5x^9-2x^6+5x^3+1]
=2x^(n-6)[(x^6-1)²-5x³(x^6-1)]
=2x^(n-6)(x^6-1)(x^6-5x³-1)
=2x^(n-6)(x^6-5x³-1)(x+1)(x-1)(x²+x+1)(x²-x+1)

1、=1/2[(x+y)(x-y)+3x-7y-10]
=1/2(x+y+5)(x-y-2)

2、=2x^(n-6) [x^12-5x^9-2x^6+5x^3+1]
=2x^(n-6)[(x^6-1)²-5x³(x^6-1)]
=2x^(n-6)(x^6-1)(x^6-5x³-1)
=2x^(n-6)(x^6-5x³-1)(x+1)(x-1)(x²+x+1)(x²-x+1)

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