Question

2. Evaluate the following for a = 2, b = - 1, c = – 2.
(i) 3a2 + b
(ii) 2ab2 – 5ab + 7
(iv) ab2 + a²b
(v) at btc​

Answer 1

Answer:

1.)11

2.)9

3.)-8

Step-by-step explanation:

1.)3a2+b

=3×2×2+(-1)

=12-1

=11

2.)2ab2-5ab+7

=2×2×-1×2-5×2×-1+7

=-8+10+7

=-8+17

=9

3.)ab2+a^(2)b

=2×-1×2+2^(2)×-1

=-4-4

=-8