EXPLANATION
Considering the expression:
a-bc², when a=3; b=2 ; c=-1
3-2x(-1)² [Solving the power]
=3- 2x1 [Simplifying]
= 3 - 2 = 1
The answer is 1.
Then, considering the expression c²+a²b and substituting terms:
(-1)² + (3)²x2 [Solving the powers]
=1 + 9x2 [Multiplying numbers]
= 1 + 18 [Adding numbers]
= 19
The answer is 19
