Leabhar Iomlán - Cogg

Cleachtadh 1.51. a 6, b 1, c 122. p 13, q 103. a 3, b 74. a 2, b 105. p 2, q 5_4 , r 2386. a 3, b 97. m 9, n 28. (i) a, b, c, d 1, 10, 31, 30(ii) p, q, r 5, 33, 529. p 2, q 510. a 7.5, b 37.75, c 4.511. p 12, q 4812. a 3, b 113. b 4, c 314. a ____ 2c515. pq 816. Cruthúnas17. A 1_2 , B 1_218. C 1_ 5 519. A 1_3 , B 1_320. a 27, b 5421. p 12, q 1622. c 3, d 4; (x 2)(x 2)(x 3)23. 524. a 9 p 2 , b 9p, p 8, 125. Cruthúnas26. Cruthúnas27. Cruthúnas28. 2x 129. A 2, B 1, C 1Cleachtadh 1.61. (i) x ______ 4 2y3(iii) x _____ y 810(v) x 9y 62. (i) x y 1 _____6(iii) x _____ ab c___3. (a) r √___ Vh(b) r ____ A2h4. (a) r 2 (b) 4r 2(c) r 2 (4 ) (d)5. (i) v c( f 1 f ) ________f 16. (i) l T 2 g ____4 2(ii) x ______ 4c b22y 15(iv) x _______5yz(vi) x _____y z(ii) x ______ y 3z2__ r 2(16 )4(ii) c f 1 v ______f 1 f(ii) l 2.3 m(c) Cruthúnasb(x y)7. (i) a ________ (ii) a __ bx y23u 4y8. (i) v _______ (ii) v _______ 2s ut3t9. (i) i 100 3 √ __A__ 100 (ii) 2.0%P10. (i) c _____ a bad 2 (ii) c _____ b 1b 211. (i) h √ ________225 r 2 (ii) h 10 √ __2(iii) h 13 cm12. (i) L 300 2W(ii) A W(300 2W)(iii) W 50, L 200 nó W 100, L 100Cleachtadh 1.71. (a) Líneach (b) Líneach(c) Cearnach (d) Cearnach(e) Cearnach (f) Cearnach(g) Cearnach (h) Líneach(i) Cearnach (j) Cearnach2. (a) 4x 2 1 (b) 4 x 23. (i) 5x 2 (ii) 4x 6 (iii) 3 x(iv) 2 5x4. 2x 5(v)x__2 3 (vi) 1 __ x 55. 2x 56. (a) 3x; 45 (b) 4x; 60 (c) 2x 1; 317. 70 35x; 125 24x; 5 mhí8. f (t) 2t 2 t 4; sa 16ú huair an chloigCleachtadh 1.81. (i) Ní de chéim 1 é x 2(ii) Ní de chéim 1 é (x 1) -1(iii) y 2 3x 4 ⇒ y √ ______3x 4 ;ní de chéim 1 é2. (i) 7 (ii) 3 (iii) 33. (i) 2 (ii) 2 (iii) 1 (iv) 2.54. (i) 2 (ii) 11 (iii) 75. (i) 2 (ii) 12 (iii) 36. (i) 3 (ii) 9 (iii) 5 (iv) 1.57. (i) 2.5 (ii) 2Cleachtadh 1.91. (i) (4, 2) (ii) (2, 5) (iii) (3, 1)2. (i) (3, 2) (ii) (2, 5) (iii) (3, 21_2 )3. (10, 5)4. (10, 7)5. (i) (x, y, z) (2, 3, 1)(ii) (x, y, z) (2, 3, 1)(iii) (x, y, z) (5, 0, 1)6. (i) (a, b, c) (1, 4, 2)(ii) (x, y, z) (2, 3, 1)(iii) (x, y, z) (3, 1, 2)7. (x, y, z) (1, 2.5, 0.5)8. (a, b, c) (1, 1, 2)280