Question

Solve for y.
y y
—— = ——
P-9 P+9

Answer 1

9514 1404 393

Answer:

y = 0

Explanation:

Subtracting the right side gives ...

`(y)/(P-9)-(y)/(P+9)=0\\\\y\left(((P+9)-(P-9))/(P^2-81)\right)=0\\\\y\left((18)/(P^2-81)\right)=0\\\\\boxed{y=0}`

The factor multiplying y cannot be zero, so y must be zero.