计算题 (1)-x²·﹙-x﹚² (2)﹙x-2﹚﹙x+3﹚1.计算题 (1)-x²·﹙-x﹚² (2)﹙x-2﹚﹙x+3﹚ (3)﹙a-2b+3c﹚﹙a+2b-3c﹚ ﹙4﹚﹙a+1/2﹚²·﹙a²+1/4﹚²·﹙a-1/2﹚²2
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 16:54:16
![计算题 (1)-x²·﹙-x﹚² (2)﹙x-2﹚﹙x+3﹚1.计算题 (1)-x²·﹙-x﹚² (2)﹙x-2﹚﹙x+3﹚ (3)﹙a-2b+3c﹚﹙a+2b-3c﹚ ﹙4﹚﹙a+1/2﹚²·﹙a²+1/4﹚²·﹙a-1/2﹚²2](/uploads/image/z/2451674-2-4.jpg?t=%E8%AE%A1%E7%AE%97%E9%A2%98+%281%29%EF%BC%8Dx%26%23178%3B%C2%B7%EF%B9%99%EF%BC%8Dx%EF%B9%9A%26%23178%3B+%282%29%EF%B9%99x%EF%BC%8D2%EF%B9%9A%EF%B9%99x%EF%BC%8B3%EF%B9%9A1.%E8%AE%A1%E7%AE%97%E9%A2%98+%281%29%EF%BC%8Dx%26%23178%3B%C2%B7%EF%B9%99%EF%BC%8Dx%EF%B9%9A%26%23178%3B+%282%29%EF%B9%99x%EF%BC%8D2%EF%B9%9A%EF%B9%99x%EF%BC%8B3%EF%B9%9A+%283%29%EF%B9%99a%EF%BC%8D2b%EF%BC%8B3c%EF%B9%9A%EF%B9%99a%EF%BC%8B2b%EF%BC%8D3c%EF%B9%9A+%EF%B9%994%EF%B9%9A%EF%B9%99a%EF%BC%8B1%2F2%EF%B9%9A%26%23178%3B%C2%B7%EF%B9%99a%26%23178%3B%EF%BC%8B1%2F4%EF%B9%9A%26%23178%3B%C2%B7%EF%B9%99a%EF%BC%8D1%2F2%EF%B9%9A%26%23178%3B2)
计算题 (1)-x²·﹙-x﹚² (2)﹙x-2﹚﹙x+3﹚1.计算题 (1)-x²·﹙-x﹚² (2)﹙x-2﹚﹙x+3﹚ (3)﹙a-2b+3c﹚﹙a+2b-3c﹚ ﹙4﹚﹙a+1/2﹚²·﹙a²+1/4﹚²·﹙a-1/2﹚²2
计算题 (1)-x²·﹙-x﹚² (2)﹙x-2﹚﹙x+3﹚
1.计算题 (1)-x²·﹙-x﹚² (2)﹙x-2﹚﹙x+3﹚ (3)﹙a-2b+3c﹚﹙a+2b-3c﹚ ﹙4﹚﹙a+1/2﹚²·﹙a²+1/4﹚²·﹙a-1/2﹚²
2.若x²+2x+y²-6y+10=0,求x,y的值.
计算题 (1)-x²·﹙-x﹚² (2)﹙x-2﹚﹙x+3﹚1.计算题 (1)-x²·﹙-x﹚² (2)﹙x-2﹚﹙x+3﹚ (3)﹙a-2b+3c﹚﹙a+2b-3c﹚ ﹙4﹚﹙a+1/2﹚²·﹙a²+1/4﹚²·﹙a-1/2﹚²2
1.计算题
(1)-x²·﹙-x﹚²=-x^4
(2)﹙x-2﹚﹙x+3﹚ = x²+x-6
(3)﹙a-2b+3c﹚﹙a+2b-3c﹚
=a² -(2b-3c)²
=a²-4b²+12bc-9c²
﹙4﹚﹙a+1/2﹚²·﹙a²+1/4﹚²·﹙a-1/2﹚²
=﹙a²-1/4﹚²·﹙a²+1/4﹚²
=﹙a^4-1/16﹚²
=a^8-1/8a^4-1/256
2.若x²+2x+y²-6y+10=0,
则(x+1)²+(y-3)²=0
x+1=0 x=-1
y-3=0 y=3