1、(1/2)x^2-(1/2)y^2+(3/2)x-(7/2)y-5
问题描述：
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)
答
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)(x...