Question

x^2-16=

Answer 1

There is no answer without a value to x.

Answer 2

are you sure there isn't more to the equation?

Answer 3

i think you have to put x on the other side

Answer 4

Otherwise it is just \[x = \sqrt{16}\]

Answer 5

oh maybe not

Answer 6

Where you add 16 on both sides and cancel out the quare of x by finding the square root of 16, which is 4. So x = 4.

Answer 7

Unless there is another value you forget to put in.

Answer 8

perhaps factor it as a difference of squares
a^2 - b^2 = (a+b)(a-b)