bbyhaiz02 bbyhaiz02

25-04-2017
Mathematics

contestada

what two numbers add to -7 and multiply to 12?

Respuesta :

25-04-2017

a+b=-7 and ab=12

from the first we can say a=-b-7 and using this value for a in the second we get:

(-b-7)b=12

-b^2-7b=12

b^2+7b+12=0

b^2+3b+4b+12=0

b(b+3)+4(b+3)=0

(b+4)(b+3)=0

So the numbers are -3 and -4

Answer Link

Otras preguntas

PLEASE HELP SOON! Please answer the question and explain step by step how you got your answer. Julian is using a biking app that compares his position to a simu

8. Why did the Europeans have writing? What innovations helped the creation and spread of books in Eurasia?

A 7 foot ladder is leaning against the building. The foot of the ladder is 2 feet away from the base of the building. How far up the wall is the top of the ladd

The unit of induced electromotive force is

Vladimir lenin's ideas would eventually shape the foundation of the ussr. his early views were shaped by a. the confiscation of his family's land and wealth by

The number one job a health inspector has is making sure which of the following happens?

Examine the page from a public service campaign website. why might a public service campaign about recycling include a video game like this one? select two opti

True or false: The vision of an organization describes its very purpose or reason for existence; the mission describes what the organization hopes to be in the

When the speaker first started dabbling in the maker movement, he started in nature. What inspired him to begin there?

Help pls pls pls pls