40w - 8y + 16
-8 x -5w = 40w
-8 x y = -8y
-8 x -2 = 16
Answer and workings in the attachment below.
Assuming you want the inverse of f(x)=x²-2,
f(x)=x²-2
repalce f(x) with y
y=x²-2
switch x and y
x=y²-2
solve for y
x=y²-2
x+2=y²
√(x+2)=y
replace y with f⁻¹(x)
f⁻¹(x)=√(x+2)
the inverse is √(x+2)
Answer:
8
Step-by-step explanation: