Answer:
216
Step-by-step explanation:
8x³
Put x as 3 in the expression.
8(3)³
Solve the power.
8(27)
Multiply.
= 216
Answer:
use the pythagoras theorem
Step-by-step explanation:

X^2-y^3=6
x^2-6=y^3
y= (x^2-6)^1 by 3
X= 2 and y=-2 check by multiplying