bearninja bearninja

02-09-2016
Mathematics

contestada

What do you times together to get -20 and add together to get 24??

Respuesta :

nobillionaireNobley nobillionaireNobley

04-09-2016

Let the two numbers be x and y
xy = -20 . . . . . (1)
x + y = 24 . . . . .(2)
From (2), x = 24 - y . . . . . (3)
Putting (3) into (1), we have:
(24 - y)y = -20
24y - y^2 = -20
y^2 - 24y - 20 = 0
y = 12 + 2√41 and x = 12 - 2√41

Answer Link

Otras preguntas

The line with equation ax+by=20 passes through the points(-2,10) and (1,5)find a and b

what is the ordered pair solution for;x + 2y = 53x - y = 1

Why was Emmeline Pankhurst significant?

Write each decimals as a fractions or a mixed number. 26.3 and 7.104 >> help <

What method of generating electricity doesn't make use of a rotating generator?

Which measurement is not equal to 3 m 30 dm or 300 cm or 3000 mm or 3000 cm

I am so confused about this graphing problem, just need answer doesn't have to show workRectangle ABCD has a length of 9 and a width of 7. Point D is the ordere

solve the equation in factoral form (x+3)(x-2/5=0

a video game is on sale for 25 percent off the original price is $42. what is the discount? and what is the sale price?

what did the Muslims gain from the crusaders ?