Question

x² - 16 = 0 factorization ​

Answer 1

Answer:

Step-by-step explanation:

X²-16

=x(x-4) 4( x-4)

=x+4,x-4. As 4x will cancel

X=4,-4

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Answer 2

Answer:

If x² - 16 = 0 then x = ±4.

Step-by-step explanation:

Method 1

$(a^2- b^2 ) = (a - b) (a + b)\\ x^2-16 = 0\\x^2 - 4^2 = 0\\(x - 4)(x + 4) =0$

x - 4 = 0 and x + 4 = 0

x = 4 and x = -4

Method 2:

x² - 16 = 0

x² = 16

x² =  4²

x = ±4