What are the solutions to the quadratic equation x2 - 16 = 0?

x = 2 and x = - 2

x = 4 and x = - 4

x = 8 and x = - 8

x = 16 and x = - 16

x = 4 and x = - 4

Step-by-step explanation: B on edg I got 100%

Answer: x = + 4 or x = - 4

Step-by-step explanation:

x² - 16 = 0

using bi formula

-b ± (√b² - 4ac) / 2a

where a=1, b=0, c=-16 from the equation above

- (0) ± (√ (0) ² - 4 x1x-16) / 2x1

= ± (√64) / 2

= ± 8/2

= ± 4

∴ x = + 4 or x = - 4

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