Solve the quadratic equation by completing the square. (enter your answers as a comma-separated list. if an answer does not exist, enter dne.) 4x2 + 10x − 15 = 0

Step-by-step explanation:

We are given

We can solve for x by completing square

Firstly, we will add both sides by 15

now, we can use formula

now, we can factor 10x in 2ab form

now, we can add both sides by (5/2)^2

so, we get square as

now, we can take sqrt both sides

and we get

now, we can solve for x

and we get

step-by-step explanation:

i have no idea

the best buy, is the 4- kilogram bag of lollipops for $18.40.

step-by-step explanation:

i found my answer by dividing the cost of each bag by their respective weights.

14.88 divided by 2 = 7.44

17.29 divided by 3 = 5.77

18.4 divided by 4 = 4.6

24.4 divided by 5 = 4.88

by this, i found that the 4 kilo bag is the best buy.