Question

how do i factor -4x^2+28=0?

Answer 1

a good first start would be to factor out a \(-4\) to get \(-4(x^2-7)\)

Answer 2

after that either you are done if you are working with integers, or you can factor \(x^2-7\) as the difference of two squares

Answer 3

it just says in my study guide to determine all solutions of the following quadratic equation

Answer 4

i assumed i had to factor could this be used in the quadratic formula?