(x+1)(x+2)=? Hi there,
For your first question you are multiplying a binomial by a binomial. You can do this by applying the distributive property you are already familiar with and reduce the problem to one of multiplying a binomial by 2 monomials. I will illustrate this: = (x)(x + 2) + (1)(x + 2) = x^{2} + 2x + x + 2 = x^{2} + 3x + 2 For your second question you need to remember that if 2 numbers multiplied together result in zero, then either one of the terms is zero, or both of the terms is zero. You need to find which values for x will result in the whole expression being zero. So either (2x  1) is equal to zero, or (x  4) is equal to zero (or both of them are). Can you see how to solve for which values of x make (2x1)(x4)=0 now? Hope this helps, Leeanne
