You are viewing a single comment's thread from:

RE: Test Your Math Skills and Win SBD # 2

in #contest7 years ago (edited)

2 , 3 and 4 are True

  1. for x=-1 the equation will be 1<1 this is false
  2. x cubed is always negative (if x negative) while x squared will always be positive so x^3 < x^2 is True
  3. if x= - 1 the equation will be : -2<0 True
    if x= - 2 the equation will be : -5/2 <0 True
    if x= - 10 the equation will be : -20 <0 True
    4.True because the root square will have 2 solutions 1 positive and 1 negative
    so if x=-1 the equation will be -1 = -1 True .
    If x=-3 the equation will be -3=-3 True

So 1 is false , but 2,3,4 are True