Question

Evaluate the following:
(i) 2a + 3b - c if a = 3, b = - 4, c = -2
(ii) a + b3 + c3 - 3abc if a = -1, b = 2, c = 3
(iii) a + b3 + 3ab2 + 3a²b if a = 2, b = -3
(iv) 5 + a² + ab - 9c if a = 5, b = 4, c = 0
(v) 6a - 5b2 + 2c2 - 3a²bc if a = 1, b = 2, c = -1​

Answer 1

Step-by-step explanation:

(i) 2×3 + 3×-4 - (-2)=6-12+2 = -4