Question

Factorise :
${x}^{2} - x - 42$
​

Answer 1

Step-by-step explanation:

42−x

2

−x

−x

2

−x+42

x

2

+x−42

x

2

+7x−6x−42

x(x+7)−6(x+7)

(x+7)(x−6)

Now,

x+7=0

☆x= -7☆

x-6=0

☆x=6☆

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