Question

factorise
x²-23x+42​

Answer 1

Answer:

x=(21,2)

Step-by-step explanation:

x²-23x+42

=x²-2x-21x+42

= x(x-2)-21(x-2)

= (x-21)(x-2)

= x-21=0 or x-2=0

= x=21 or x=2

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