Question

Use the quadratic formula to solve x2 – 4 = 0.

Answer 1

soo easy
use the quadratic formula placed in attachment
then put you answer in a,b,c,d order
a=1
b=0
c=-4
Then you perform the steps within the quadratic square root
which is b^2-4ac
\[\sqrt{0^2-4(1)(-4)}= \sqrt{16}= 4\]
4 is the answer

Answer 2

\[x^2-4=0\]
=>\[x^2=4\]
=>\[x=\sqrt{4}\]
=>\[x=2\]

Answer 3

Use the method given by aussy123 @alexxmarie

Answer 4

oh yea and \[\sqrt{4}=2 \]
so sorry 2 is the answer....THANKS VIPER

Answer 5

Anytime:)