3(x+2)》=49x-1)+7
1个回答
3x+6>=4x-4+7
4x-3x
相关问题
limx->7 (2-(x-3)^(1/2))/(x^2-49)
解方程(2x-1)(x+7)=-3x+49
(x+2)^3-(x+2)-(7^3-1) =(x+2-7)[(x+2)^2+7(x+2)+49]-(x+2-7)中^是
1/1X3+1/3X5+1/5x7+1/7+9+…+1/49x51=?
选择适当的方法解下列方程,(1) x(2x-7)=2x (2) x(2x-7)=-8分之49(3) (2x-1)²=(3
解方程 ⑴3x^2+4x-7 ⑵5(2x-1)^2=80 ⑶ (x+17)^2=49
求x值,三题3又1/2+4=4.7 3.7*5-2x=1又1/2 x-2/9x=49/25
(49X^2-9Y^2)÷(7X-3Y)
一.分解因式1.x^2(x-y)+(y-x)2.(x+y)^2-14(x+y)+49 3.7x^n+1-14x^n+7x
观察下列式子:2X4+1=9=3^2 6X8+1=49=7^2.