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Difference of Two Squares

Friday, 1 May 2026

You can factorise an equation, such as $9 - x^2$ , if both values are roots.

Difference means subtraction only.

Equation:

(r^1 - r^2)(r^1 + r^2)

Example

9 + x^{2} 9 = 3 x^{2} = x (3 - x) (3 + x)