Plzzz help and thanks

(-y to the power of 2 - 4y- to the power of 2 -6 y +3)

Robert has 78 tomato lants and 56 cucumber plants .he wants to plant them in rows that only have one type of plant in each row with the same number of plants in each row. how many plants should he put in each row and how many rows of each type of plant will he need

Betty correctly answers 30 questions on your math test there are 40 questions on the test what percent of the questions did she answered incorrectly