Question

X^2 – 16 = 0 Solve for x, show work.

Answer 1

x^2=16
x=sq rt 16
x= 4 or -4

Answer 2

Unless you have just learned the difference of two squares in which case you should show your work as (x + 4)(x - 4) = 0 and therefore x = -4, or x = 4