X(2X-3)(2X+3)-(X-3)(X²+9)-(2X²-1)(X+2)
问题描述:
X(2X-3)(2X+3)-(X-3)(X²+9)-(2X²-1)(X+2)
其中X=-2
解不等式:2(X-3)(X-2)-(X+3)²>(X-1)(X+1)
化简后求解:
答
2(X²-5X+6)-(X²+6X+9)>X²-1
-16X+3>-1
4>16X
X