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

jack and maureen are opening an ice hotel. th e structure and furniture are made out of ice. they must determine the weight of some of the ice furniture to deci
96 is 75 percent of what number
Clear cut inpassible boundaries separate the methods of paragraph development. True or False?
Different ____________ are assigned to track multiple reviewers of a document. a. shapes c. colors b. numbers d. fonts
the superlative form of beautiful
find the pair of numberswhose sum is 40 and whose product is a maximum.
Most historians point to _____ as the birthplace of modern theater.
Please help me real fast What is the simplified form of the expression? Picture below
Translate this sentence into Spanish: Let's look at the map we have right here. A. Miramos la mapa que tenemos allí. B. Miro el mapa que tengo aquí. C. Miremos
If point C is between points A and B, then ________ + CB=AB