Question

how would I solve this?
x2 - 4 = 0

Answer 1

differnce of squares homie

Answer 2

(x-2)(x+2)=0
x=2 and x=-2

Answer 3

x^2=4
x=+2
x=-2

Answer 4

so every problem like this i have to put both the negative and positive?

Answer 5

if its square

Answer 6

ok thanks

Answer 7

it factors into
(x+2)(x-2)
by some rule.
set it to 0 and solve.
(x+2)(x-2)=0
x=2, -2

Answer 8

some rule=zero product rule

Get you rules straight

Answer 9

x2 - 4 = 0
+4 + 4

x2 = 4
square both of them . to get x = the square root of 4 (: