Continuity Calculus Help

Find the value of constants c and d that make the function below continuous at
x = 4.
f(x) =

x2 − 3x x < 4
c x = 4
d + x x > 4

c =

d = 8

I got d=8, but finding c is giving me trouble.

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  1. may be if you put your parentheses well i might be able to help you,because i dont understand you mathematical write up

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