jordtravs jordtravs
  • 25-01-2017
  • Mathematics
contestada

What two numbers multiply to -320 and add to 32

Respuesta :

surjithayer surjithayer
  • 25-01-2017
let a and b be the numbers,then a+b=32,b=32-a
ab=-320
a(32-a)=-320
32a-a^2=-320
a^2-32a-320=0
a^2-40a+8a-320=0
a(a-40)+8(a-40)=0
(a-40)(a+8)=0
a=40 or-8
when a=40,b=32-40=-8
when a=-8,b=32-(-8)=32+8=40
so numbers are 40 and -8
Answer Link

Otras preguntas

Suppose in the year 2019, people spent $500 on durable goods, $600 on non-durable goods, and $900 on services. During the same year, the government paid a total
help.help.help.pls.pls
Road Hazards has 12-year bonds outstanding. The interest payments on these bonds are sent directly to each of the individual bondholders. These direct payments
John's dairy makes and sells homemade ice cream. He uses a machine he bought 15 years ago for $1,500. The machine still works but is so old that nobody else wou
Wet for the Summer, Inc., manufactures filters for swimming pools. The company is deciding whether to implement a new technology in its pool filters. One year f
7th grade math help me pleaseee :)
Why do chemists routinely test existing chemicals
describe how commerce relate with industry and direct services​
The vertical force f acts downward at A on the two membered frames. Determine the magnitude of the two components of F directed along axes of AB and AC. Set F=5
choose the type of error described. can you help me bc i don’t know??