Algebra substitution

Substitution a = 3 b = 4 c = 2 a + b + c = 3 a + b + c 4 2 = 9

Substitution a = 3 b = 4 c = 2 3b + c = 3 x b + c 4 2 = 14

Substitution a = 3 b = 4 c = 2 a2 + c = a2 + c 3 2 = 9 + 2 = 11

Substitution a = 3 b = 4 c = 2 4a – c2 = 4 x a - c2 = 4 x 3 – 22 = 12 – 4 = 8

Substitution a = 3 b = 4 c = 2 ab - 2 = a x b - 2 = 4 x 3 – 2 = 12 – 2 = 10

Exercise 1 a = 3 b = 4 c = 2 4a + c 8. b + c a – c 2 7b – 14c 9. 5(a + b) b2 - c2 10. abc ab + bc ab – (10 + c) 10bc + 5b

Exercise 1 a = 3 b = 4 c = 2 4a + c 14 8. b + c 3 a – c 1 2 7b – 14c 0 9. 5(a + b) 35 b2 - c2 12 10. abc 24 ab + bc 20 ab – (10 + c) 0 10bc + 5b 100

Exercise 2 a = 3 b = 4 c = 2 Find 3 different formulae to give an answer of 0 Find 3 different formulae to give an answer of 2