Question

Complete the square to form a perfect square trinomial.

x² - 16x + __

Answer 1

Hint: x² - 16x + (-16/2)^2

Answer 2

4

Answer 3

It's not 4

Answer 4

sorry i forgot the 64?

Answer 5

(16/2)^2 is not four.

Answer 6

64 is correct, but you still should put it in simplified form

Answer 7

Remember, perfect square binomials follow the form\[(a \pm b)^2=a^2 \pm2ab+b^2\]Of course, the plus or minus in the second part depends on the plus or minus in the first part, or visa-versa.