math
posted by jillian on .
A: Solve the following equation:
k2 + 4k = 0
A: By factoring
B: By using the quadratic formula
D: Do the results in A, B, differ from each other? Why or Why not?

You must mean
k^2 + 4k = 0
factoring:
k(k+4) = 0
so k=0 or k= 4
formula:
x = (4 ± √(16  4(1)(0))/2
= (4 ± 4)/2
= 0 or 4
why should they differ??? Both are valid methods.