amareun amareun
  • 02-04-2018
  • Mathematics
contestada

Factor x2 + x – 42. x2 + x – 42 = x2 + – 42
= x( )– (x + 7) =

Respuesta :

penfila11Pen
penfila11Pen penfila11Pen
  • 03-04-2018
Hey there :)

x² + x - 42

The sum is 1
The product is - 42

Possibilities? 
[tex] \left \{ {{6(-7)=-42} \atop {6+(-7)=-1}} \right. [/tex]
This is wrong since the sum is not 1

[tex] \left \{ {{7(-6)=-42} \atop {7+(-6)=1}} \right. [/tex]
This is right

So the factored version will be:
( x + 7 )( x - 6 )
Answer Link

Otras preguntas

-ax+3b>5 solve for x
most plants appear green because chlorophyll A. does not absorb green light B. reflects violet light C. absorbs green light D. none of the above (in a rush pls
The United States' entry into World War II had which of these effects on domestic politics? (1 point) Pro-union legislation was repealed. Support for ba
Plants store their excess carbohydrates in the form of____
The community center has $100 to purchase new basketballs that cost $16.55 each and soccer balls that cost $14.75 each, where x is the number of purchased baske
An agreement between two parties that benefits them both is
Jerome takes a math course and a science course for summer school. For every 4 hours Jerome spends studying math, he studies science for 3 hours. Of Jerome spen
To provide for the education of minor children would not be a reason to set up a trust. True False
How to solve this problem
A marina rents boat slips monthly as listed below: $400, $350, $375, $325, $325, $350, $375, $275, $425, $320, $350, $475. They decide to raise their rates by $