Question

What is the value of 6x^3 +8x when x = 5

Answer 1

Just sub x in with 5.
So 6(5)^3+8(5) = 6 (125) + 40 = 750 + 40 = 790.
So 790

Answer 2

6 (5^3)+8
5*5*5
*6
+8
So your answer if you're evaluating is 758