Question

f(u) = u2 − 1
u f(u)
–5
–3
–1
1

Answer 1

f(u) = u^2 − 1

f(−5) = (−5)^2 − 1 = 25 − 1 = 24
f(−3) = (−3)^2 − 1 = 9 − 1 = 8
f(−1) = (−1)^2 − 1 = 1 − 1 = 0
f(1) = 1^2 − 1 = 0

So the completed table:
u: −5, −3, −1, 1
f(u): 24, 8, 0, 0