Question

Solve via a method of factoring. Hint: write it in ax^2+bx+c=0 form first. a^2 = 4(3a-9)

Answer 1

a^2 = 4(3a-9)
a^2 = 12a -36

Answer 2

now we get "everything" on one side.
a^2 -12a + 36 = 0

Answer 3

do you know what to do from here?