Exercise 1 Page 213

To evaluate the given expression for a= 2, b= 1, and c= 5, we should substitute these values into it and simplify as much as possible. Remember that according to the order of operations, exponents are calculated before multiplication.

3a^2-2ab+c

SubstituteValues

Substitute values

3* ( 2^2)-2* ( 2)* ( 1)+( 5)

CalcPow

Calculate power

3* 4-2* 2* 1+5

Multiply

Multiply

12-4+5

AddSubTerms

Add and subtract terms

13

The expression evaluates to 13.