Answer:
I'm going to assume that the percentage sign means divide.
52
Step-by-step explanation:
8*6+(12-4)/2
8*6+(8)/2
48+8/2
48+4
6
84
k(x+6)= 4x²+20
k(10)= k(4+6)= 4*4²+20= 64+20= 84
