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