Question

Evaluate the expression when c=4.
c2 +5c-8

Answer 1

if c=4

then c2+5c-8

4*3+5*4-8

12+20-8

32-8

24.

Answer 2

`Given\: equation\: ➠ \:{c}^(2)\:+\:5c\:-\:8`

`Value\: of\: c \:=\: 4`

Evaluating c = 4 in equation .

`⟶\:{c}^(2)\:+\:5c\:-\:8`

`⟶\:{4}^(2)\:+\:5(4)\:-\:8`

`⟶\:16\:+\:20\:-\:8`

`⟶\:36\:-\:8`

`⟶\:28`