03-05-2017
Mathematics

contestada

K2-4K-21. How do you factor this

Respuesta :

apologiabiology apologiabiology

03-05-2017

assuming yo mean
k²-4k-21

factor by doing
what 2 numbers multipily to get -21 and add to get -4?
-7 and 3

(k-7)(k+3) is factored

Answer Link

Otras preguntas

What are the zeros of the function? f(x)=3x^2−24x+36 Enter your answers in the boxes. The zeros of f(x) are and

Please help me. I really need help with this proof.

Quadratic equations and factoring 8x^2 +10x+3=0

Create your own example of a fallacy: Locate or develop an example of each of the following kinds of false appeals. For each example, explain why you think that

A __________ is a set of possible pay rates defined by a minimum, maximum, and midpoint of pay for employees holding a particular job or a job within a particul

please answer these two before 1:20 pm please!!! thank you!!!

How much heat is absorbed by a 45g iron skillet when its temperature rises from 6oC to 21oC?

Find the first five terms of the described sequence: Start with 6 and add 7 repeatedly. State whether the sequence is arithmetic, geometric, both, or neither.

Miss Jackson, a middle school counselor, is concerned about the special problems girls face at adolescence. Consider the research evidence for gender difference

hi can u plz help me???