Question

find the vakue if x=? ​

Answer 1

Answer:

4

Step-by-step explanation:

$x^{2} -4^{2} = 0\\x^{2} =4^{2}$

$x^{2}  = 16$

x = $\sqrt{16} \\= \sqrt{4*4} \\= 4$

so x is = 4

note: x can also be -4 but square root must be taken positive