Q84Multiple choice
Simplify
- (i)(3x + 2y)2 + (3x – 2y)2
- (ii)(3x + 2y)2 – (3x – 2y)2 7 9
- (iii)a + b – ab 9 7 3 4
- (iv)x − y + 2xy 4 3 (v) (1.5p + 1.2q)2 – (1.5p – 1.2q)2 (vi) (2.5m + 1.5q)2 + (2.5m – 1.5q)2 (vii) (x2 – 4) + (x2 + 4) + 16 (viii) (ab – c)2 + 2abc (ix) (a – b) (a2 + b2 + ab) – (a + b) (a2 + b2 – ab) (x) (b2 – 49) (b + 7) + 343 (xi) (4.5a + 1.5b)2 + (4.5b + 1.5a)2 (xii) (pq – qr)2 + 4pq2r (xiii) (s2t + tq2)2 – (2stq)2
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(i) (3x + 2y)2 + (3x – 2y)2
(ii) (3x + 2y)2 – (3x – 2y)2 7 9
(iii) a + b – ab 9 7 3 4
(iv) x − y + 2xy 4 3 (v) (1.5p + 1.2q)2 – (1.5p – 1.2q)2 (vi) (2.5m + 1.5q)2 + (2.5m – 1.5q)2 (vii) (x2 – 4) + (x2 + 4) + 16 (viii) (ab – c)2 + 2abc (ix) (a – b) (a2 + b2 + ab) – (a + b) (a2 + b2 – ab) (x) (b2 – 49) (b + 7) + 343 (xi) (4.5a + 1.5b)2 + (4.5b + 1.5a)2 (xii) (pq – qr)2 + 4pq2r (xiii) (s2t + tq2)2 – (2stq)2