Q90Multiple choice
Factorise the following, using the identity a2 – 2ab a – b )2.
- (i)x2 – 8x + 16
- (ii)x2 – 10x + 25
- (iii)y2 – 14y + 49
- (iv)p2 – 2p + 1 (v) 4a2 – 4ab + b2 (vi) p2y2 – 2py + 1 (vii) a2y2 – 2aby + b2 (viii) 9x2 – 12x + 4 x2 (ix) 4y2 – 12y + 9 (x) – 2x + 4 4x 2 (xi) a2y3 – 2aby2 + b2y (xii) 9y2 – 4xy +
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(i) x2 – 8x + 16
(ii) x2 – 10x + 25
(iii) y2 – 14y + 49
(iv) p2 – 2p + 1 (v) 4a2 – 4ab + b2 (vi) p2y2 – 2py + 1 (vii) a2y2 – 2aby + b2 (viii) 9x2 – 12x + 4 x2 (ix) 4y2 – 12y + 9 (x) – 2x + 4 4x 2 (xi) a2y3 – 2aby2 + b2y (xii) 9y2 – 4xy +