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

Can someone tell me what is a Genre?
what is the full definition of adaptation?
what is an undefined nuclear region containing only nucleic acid
what are at least 5 general PowerPoint guidelines that's you find useful and provide an example of how you would use each in real life setting
What is the given equation in logarithmic form of 7^4=2,401?
A microscope is set so it makes an object appear 4 x 10`2 times larger than its actual size. A virus has a diameter of of 2 x 10`-7 meter. how large will the di
Is Obesity Really a Big Problem in America? Please help me :)
Carla's plant was 10 2/3 inches tall. Yolanda's was 8 3/4 inches tall. How much taller was Carla's plant than Yolanda's?I came up with 2 11/12.   Am I right??
Whatis the wheel and axle?
How do you find the length of a circle in geometry?