急         答的好提高悬赏            (1)(x+3)(x-3)-x(x-2)>1解不等式组              (2)(2x-5)(-2x-5)<4x(1-x)已知a的平房方-6ab+9b的平房=-3/2a+9/2b+1/2m求m的值 

问题描述:

   急         答的好提高悬赏            (1)(x+3)(x-3)-x(x-2)>1

解不等式组
              (2)(2x-5)(-2x-5)<4x(1-x)

已知a的平房方-6ab+9b的平房=-3/2a+9/2b+1/2m求m的值
 

1)x^2-9-x^2+2x>1
2x-9>1
x>5

2)-(2x-5)(2x+5)-(4x^2-25)x>25/4

)(x+3)(x-3)-x(x-2)>1
xx-9-xx+2x>1
2x>10
x>5
)(2x-5)(-2x-5)<4x(1-x
25-4xx25/4