Answer:
2
Explanation:
add 16 to zero
4x2=16
Divide 4x by 2 and 16 by two
4x=8
divide 8 by 4
x=2
x = ± 2
Given
4x² - 16 = 0 ( add 16 to both sides )
4x² = 16 ( divide both sides by 4 )
x² = 4 ( take the square root of both sides )
x = ± = ± 2
solutions are x = - 2, x = 2
4.5m questions
5.7m answers
= ± 2