Question

find the value S=(-1),if S=u2-3u3

Answer 1

Answer:

4

Step-by-step explanation:

S = u² - 3u³

S(-1) = (-1)² - 3(-1)³

=> 1 - 3(-1)            (-x raised to even power is equal to x; -x raised to odd power)

=> 1 - (-3)

=> 1 + 3 => 4                   (Minus and minus combine to become plus)