atc1921 atc1921
  • 02-09-2016
  • Mathematics
contestada

what two numbers multiply to get 30 also add up to get -4????

Respuesta :

nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 04-09-2016
Let the two numbers be x and y
xy = 30 . . . . . (1)
x + y = -4 . . . . .(2)
From (2), x = -4 - y . . . . . (3)
Putting (3) into (1), we have:
(-4 - y)y = 30
-4y - y^2 = 30
y^2 + 4y + 30 = 0
y = -2 + i√26 and x = -2 - i√26
Answer Link

Otras preguntas

According to the acquired needs theory, we are not born with our needs but instead learn them as we go about living our lives. Group startsTrue or False
Question 1) Describe what is meant when water is called a polar molecule? ( Will Mark Brainliest).​
Why is it necessary to prepare karyotypes by viewing somatic.
3. A rectangular block of stone has a length of 9 cm, a width of 3 cm, and a height of 5.5 cm. What is the surface area of the stone?
what is the chemical formula for the sugar carbohydrate produced by photosynthesis?A. H2OB. CO2C. C6H12O6D. O2​
Imagine you are working as an insurance broker, and a company comes to you wanting to insure one of its production factories. Identify at least two distinct ris
y=-3x-8 how is this graphed
Can somebody plz report and ban CARDAA13 and CARIZASHINE
Which of the following would be covered by a home insurance policy? Question 5 options: Hospital expenses for surgery Wind damage to your roof Accidental injury
can you plz help me....