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.
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?
1 answer