Answer :

I WILL FIRST GROUP THE LIKE TERMS AND SIMPLIFY THEM BEFORE FACTORISING

IT IS VITAL TO SIMPLIFY LIKE TERMS BEFORE FACTORISING.

[tex]12 {x}^{2} - 3x + 20 - 5 \\ = 12 {x}^{2} - 3x + 15[/tex]

THE GCF IN THE EXPRESSION IS 3 MEANING WE WILL DIVIDE EACH AND EVERY TERM IN THE P

EXPRESSION BY 3

[tex] = 3(4 {x}^{2} - x + 5)[/tex]

HOPE THIS HELPS.

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Rewritten by : Barada