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Colt1911 [192]
3 years ago
8

How do you solve this?

Mathematics
2 answers:
dolphi86 [110]3 years ago
3 0
You X to the second power.. 4 to the second power is 16 and 16-16=0 so x=4
Lina20 [59]3 years ago
3 0
Add 16
x² - 16 = 0
    + 16 +16

x² = 16
Take square root

\sqrt{x^2}  =  \sqrt{16}

Remember when you take the square root of a perfect square you get two values. +ve and -ve

x = -4
x =  4

because (-4)² = 16
               ( 4)² = 16
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