Question

x6 – 7x² – 8. factorise the following​

Answer 1

Step-by-step explanation:

[tex]Given 

x6−7x3−8

=(x3)2−7(x3)−8

=(x3−8)(x3+1)

=(x3−23)(x3+13)

We know

a3+b3=(a+b)(a2−ab+b2)

and a3−b3=(a−b)(a2+ab+b2)

So,

=(x−2)(x2+2x+4)(x+1)(x2−x+1)

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