Answer:
Step-by-step explanation:
If c = 8, then:
5c^(3)+982 => 5(8)^3 + 982 = 3542
and
2c^(4)−7c = c(2c^3 - 7) => 8(2*512 - 7) = 8(1017) = 8136
So the second expression has the greater value when c = 8.
Well, let's plug c=8 in both expressions and see which number is larger:
[tex]5c^(3)+982\to 5\cdot 8^3+982 = 5\cdot 512+982=2560+982=3542[/tex]
[tex]2c^(4)−7c\to 2\cdot 8^4-7\cdot 8 = 2\cdot 4096-56=8192-56=8136[/tex]
