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Posted by **jillian** on Sunday, February 28, 2010 at 11:02pm.

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?

- math -
**Reiny**, Sunday, February 28, 2010 at 11:21pmYou 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.

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