Which are solutions of the equation x2 - 16 = 0? Check all that apply. x= -8
x=-4
x=-2
x= 2
x= 4
x=8

So we want to know what x times 2 is. So think about this: multiply x with 2. We can find out what works and what doesn’t. So remind yourself that if you are multiplying a negative number, you get a negative. And when you minus a negative with a positive it’s the same as a negative + a negative. So it can’t be a negative as the answer is 0. Try each positive and you will find the answer to be

X=8