1) s = ut + 1/2at^2 [a]
2) 1/u + 1/v = 1/f [v]
II) Find out the L.C.M. of 4a^3b, 9a^2bc^2
III) Find out the L.C.M. of 21x^3yz^2 , 7(x +1)^2y^3 z, 3xz
更新1:
IV) Let y = x^4 − x^2 + 3x . If x = –3 , what is the value of y?
