Answer:
Expand by multiplying x2+4x-4 by multiplying by x+4. Distribute and get x3+8x2+12x-16. You can verify it is correct by dividing by x+4 and you will arrive at x2+4x-4.
Answer:
(-5,31)
Step-by-step explanation:
See image.
I do not understand the equation specify so i can answer.
I hope this helps you
|HJ|=20/3 pi
|HJ|=4/9pi÷360.pi.r^2
20/3=4/9÷360.pi.r^2
20.270÷pi=r^2
5400÷3=r^2
1800=r^2
r=30 square root of 2