9 grade maths
Factorise x² - 16.
Factorise x² - 16.
1 Answer
Askiitians Tutor Team
The given expression is x^2 - 16.
This is a difference of squares, which follows the formula:
a^2 - b^2 = (a - b)(a + b).
Here, we can rewrite x^2 - 16 as:
x^2 - 16 = x^2 - 4^2.
Now, applying the difference of squares formula:
x^2 - 4^2 = (x - 4)(x + 4).
So, the factorised form of x^2 - 16 is:
(x - 4)(x + 4).
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