1) [(X+3)^2+(x+3)(x-3)]/2x
问题描述:
1) [(X+3)^2+(x+3)(x-3)]/2x
2) (x+1)^2+2(1-x)-x^2
3) (a-1)^2(a-1)^2(a^2+1)^2
4) (x-2y-1)(2y-x-1)
需要计算过程
答
1) [(X+3)^2+(x+3)(x-3)]/2x=(x+3)(x+3+x-3)/2x=(x+3)*2x/2x=x+32) (x+1)^2+2(1-x)-x^2=x^2+2x+1+2-2x-x^2=33) (a+1)^2(a-1)^2(a^2+1)^2=[(a-1)(a-1)(a^2+1)]^2=[(a^2-1))(a^2+1)]^2=(a^4-1)^2=a^8-2a^4+14) (x-2y...