Question

8. Find the value of each of the following algebraic expressions if a = 1, b = (-2) and c = 3
a. a


$a^{2}$
+ b2 + 2ab​

Answer 1

Answer:

$2a + 2b + 2ab \\ 2 \times 1 + 2 \times(- 2) + 2 \times 1 \times ( - 2) \\ = 2 + ( - 4) + 2 \times ( - 2) \\ = 2 - 4 + ( - 4) \\ - 2 + 4 \\ = - 6 \\ and \: that \: is \: the \: answer$