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(i) 6, 12 (ii) a3, 3a2
(iii) a2- 2, a - b (iv) (x - y)2,x3- y3
(v) (x + y)2,x2-xy - 2y2 (vi)
(i) 6, 12 (ii) a3, 3a2
(iii) a2- b2, a - b (iv) (x - y)2,x3- y3
(v) (x + y)2,x2-xy - 2y2 (vi)
2. Find a fo!rth proportional to
(i) 5, 8, 15 (ii) 4x4, 2x3, 18x5
(iii) 15a56, 1"a25, 21a33 (iv) x2- 11x# 24, (x- 3), 5x4-
4"x3
(v) p3# q3,p2-q2,p2-pq# q2 (vi) (p2 - $2)(p2# p$ # $2) , p3# $3
, p3- $3
3. Find a %ean proportional et&een
(i) 2", 45 (ii) 2"'35, 5'7
(iii) 15p4qr3, 135q5r7 (iv)
4. Find the val!es of the letter involved in the follo&in
contin!ed proportions.
(i) 5,p, 45 (ii) 8,x, 18
(iii) 12, 3p- 6, 27 (iv) 7,m- 3, 28
