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3 years ago

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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