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The factors of x^2 – 6x + 9 are (i) (x – 3)(x – 3) (ii) (x – 3)(x + 3) (iii) (x + 3)(x + 3) (iv) (x – 6)(x + 9)

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The factors of x2 – 6x + 9 are

(i) (x – 3)(x – 3)

(ii) (x – 3)(x + 3)

(iii) (x + 3)(x + 3)

(iv) (x – 6)(x + 9)

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(i) (x – 3)(x – 3) 

x2 – 6x + 9 = x2 – 2(x) (3) + 32 

a2 – 2ab + b2 – (a - b)2 = (x – 3)2 

= (x – 3)(x – 3)

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