21𝑥^2 − 2𝑥 +1/21
We can further write it as
= 21𝑥^2 − 𝑥 − 𝑥 +1/21
By taking out the common terms
= 21x (x -1/21) – 1 (x -1/21)
So we get
= (21x – 1) (x -1/21)
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