Which number should be added to the expression x^2-8x to change it into a perfect square trinomial?
a. -16
b. -4
c. 4
d. 16

The perfect square can be expanded as follows:

So, we have to think of the term as , which implies .

Thus, we have to add , i.e. 16, to complete the perfect square:

just find the gcf and solve the gcf's until you get each answer i have a really good feeling somethings missing xd (like the dimensions of the fence) *cough *cough *hint *hint

step-by-step explanation:

answer: 2 and 1

step-by-step explanation: got this question