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Solution 2.1:3a

From Förberedande kurs i matematik 1

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If we look at the expression, we see that it can be written as <math>x^2-6^2</math> and can therefore be factorized using the conjugate rule
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Because the factors <math> x+6 </math> and <math> x-6 </math> are linear expressions, they cannot be factorized any further (as polynomial factors).

Current revision

If we look at the expression, we see that it can be written as x262 and can therefore be factorized using the conjugate rule

x236=x262=(x+6)(x6).

Because the factors x+6 and x6 are linear expressions, they cannot be factorized any further (as polynomial factors).