animextrex animextrex

22-08-2017
Mathematics

contestada

factoring
x^2-4x-21=0

Respuesta :

Noah11012 Noah11012

22-08-2017

Find two numbers that add to -4 and that multiply to -21.

After playing around with some numbers, I got -7 and 3.

So, the factored form is (x - 7)(x + 3).

Answer Link

Otras preguntas

Solve for x. 10x^2=29x-21 does anyone know this

Rationalize the denominator and simplify-[tex] \frac{ \sqrt{6} }{ \sqrt{3} - \sqrt{2} } [/tex]

find the common ratio of r 6,24,96,384

Find the total price including 7percent tax on a $9.79 purchase

Omg i'm confuse 7(x+4) =9(x -2)

I need help on this question please help?

What are the advantages and disadvantages of DNA foresics/analysis?

how will you discribe the sequence of oxygen ,carbon dioxide, and blood flow in your own words

Solve for x. 10x^2=29x-21 does anyone know this

How much less than 1 is 3/9? Is the answer to this question 1/3???