atc1921 atc1921

02-09-2016
Mathematics

contestada

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

Respuesta :

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

What is the evidence that Parliament held the REAL authority in the English constitutional monarchy?

Producing an RNA copy of a DNA strand is referred to as __________.

How do I solve a problem like this? m-4=2m

What tools are used to pick up tiny objects

What is the fraction for 1.83

ben has 3 times as many guppies as goldfish. if he has a total of 20 fish, how many guppies does in have

What is the rising action for boar out there

Glaciers pick up large rocks and carry them away. This is called _____.

What is a word family for mentor and uttered?

David opens a bank account with $140 and then deposits $150 each month. Louis opens a bank account with $260 and deposits $120 each month. How many months will