(2,2)-(-3/2,1/2)=
(2,2)-(-3/2,1/2)=
(1:2)/(2:3)=3:
(1)(2X-3)^2=5(2x-3) (2)(X+1)^2-2
观察下列等式:1^2+(1*2)^2+2^2=(1*2+1)^2,2^2+(2*3)^2+3^2=()
计算:(1)1+2+2²=()(2)1+2+2²+2³=()(3)1+2+2²+
(x+3):3=(2x-1):2
(-2)-(-3)=-1
1.算术 -1^4-[-2-(-3)^2]/(1/2)^2 (1/2=二分之一)
(1+2/3)×(1- 2/3)×(1+2/5)×(1- 2/5)×...×(1+2/99)×(1- 2/99)=?
(1)Y=3^2X (2)Y=2^√X^2-4
(1)x-2x-1/3=x-1/2 (2)3x+1/2 - 3x-2/10=2- 2x+3/5
9(2分之3x+1)-2(x-2分之1)=-2