# math

posted by .

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?

• math -

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.

## Similar Questions

Solve the following quadratic by either factoring or using the quadratic formula: 6x2 - 5x = 6 6x^2 -5x -6 = 0 (3x+2)*(2x-3) = 0 Take it from there
2. ### Math

Using the quadratic formula to solve for x in the equation x2 = 7x + 8 results in what value(s)?
3. ### Math

A: Solve the following equation: k2 + 4k = 0 A: By factoring B: By using the quadratic formula
4. ### algebra

Solve the following equation: k2 + 4k = 0 By factoring and By using the quadratic formula Can someone please help me to understand how to this problem...I do not understand the steps to get the correct answer. Thanks!!!
5. ### math algebra

Part 1: Which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring and why?
6. ### Math

Solve the equation by factoring, by finding square roots, or by using the quadratic formula. 3(x+4)^2= -27
7. ### Math-Quartic Equation

Reduce this equation using the quadratic formula, factoring, or other algebraic method to determine the other zeros of the function. F(x)= 4x^4 - x^3 - 11x^2 -2x +6
8. ### Algebra

Solve the equation. Use factoring or the quadratic formula, whichever is appropriate. Try factoring first. If you have any difficulty factoring, then go right to the quadratic formula. (Enter your answers as a comma-separated list.) …
9. ### math help how do i do this

Decide which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring. −b b^2 − 4ac 2a Use the part of the quadratic formula that you chose above and find its value, given the following …
10. ### math help plsss plsss

Decide which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring. −b b^2 − 4ac 2a Use the part of the quadratic formula that you chose above and find its value, given the following …

More Similar Questions