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

Difference between analog and hybrid computer in tabular form

The mass per unit length of the rope is 0.0500 kg/m. Find the tension. Express your answer in newtons.

1) what are the roles of plants, animals and decomposers in an ecosystem ??

Waldman Corporation reported pretax accounting income of $100,000, but due to a permanent difference, taxable income is only $60,000. Assuming a tax rate of 25%

What the Difference in guard cell during day and night

Divide the following quantities in the following ratios £100 1:3

Line and tone Using the word bank below, annotate Relativity to demonstrate that you understand where he is applying tone and line in clever ways Write a paragr

The principle which precludes a person from asserting something contrary to what is implied by a previous action or statement of that person, or by a previous p

every sperm has ____(one/two) sex chromosomesPLEASE TELL THE ANSWER!!

A hot-air balloon is rising upward with a constant speed of 2.85 m/s. When the balloon is 2.50 m above the ground, the balloonist accidentally drops a compass o