Answer:
4^3/2 = 8; 4^y = 8^6
Step-by-step explanation:
4^3 = 64
64^1/2 = 8
4^3/2 = 8
Part 2:
4^y = 8^6
y = 9
-3x(7x+8)
-3x^2-18x^2-24x
-3x(x+6x+8)
879