Question

What is the value of the expression below when c=5 and d=4

Answer 1

6c^2-5d+8

Use the substitution method

6(5)^2-5(4)+8

Do the first bracket first

6(5*5)-5(4)+8

6(25)-5(4)+8

150-5(4)+8

Multiply again

150-20+8

130+8

=138

Answer: (C) 138