Answer:
y³ - 3y² + 1/y+3
Step-by-step explanation:
y² - 9 = (y - 3) ( y + 3)
y-3/(y-3)(y+3) = 1/y+3
y^2+1/y^2+3
x2=400
x=√400
=20
20^2=400
1. 2=180-90
=90
1=180-(90+72)
=180-162
=18
2. 180-(40+55)
180-95
85
180=(180-108)+x+(180-4x)
180=72+x+180-3x
180=252-3x
-72=-3x
72=3x
x=24
585m³
Multiply all of the numbers together
13 × 5 × 9 = 585
