Verified answer

By synthetic division, we have..

y - 3 = 0

y = 3

3 | 1 - 8 . .- 3 + 54

. . . .+ 3 - 15 - 54

. . 1 - 5 .- 18 + 0

Hence, the quotient is y² - 5y - 18

I hope this helps!

synthetic division

x2-5x-18 no remainder