Question

1.2y-0.4y^2-0.3y-1.5y^2 how to solve

Answer 1

you would have to collect the terms to get 0.9y - 1.9y^2
then factoris out y so you get
y(0.9 - 1.9y)
i can't go any further because you havent given what the equation equals

Answer 2

this is all it how it is written in the book, it also states to combine the like terms