roviesonsyahoocom roviesonsyahoocom
  • 01-08-2016
  • Mathematics
contestada

The product of two numbers is 30. The sum of the two numbers is 20. What might the two numbers be?

Respuesta :

caylus
caylus caylus
  • 02-08-2016
Hello,

Let's be a and b the 2 numbers.

a+b=20==>b=20-a
a*b=30==>a*(20-a)=30
==>a²-20+30=0
Δ=20²-4*30=4*70
a=(20+2√70)/2 or a=(20-2√70)/2
==>(a=10+√70 and b=10-√70) or (a=10-√70 and b=10+√70)
The 2 numbers are 10+√70 and 10-√70 .
Answer Link

Otras preguntas

What Is a Zionist? Please help me :)
During the Renaissance, along with the importance of God, who else did people had value?
What is the given equation in logarithmic form of 7^4=2,401?
What does it mean when Brutus says: "Into what dangers would you lead me, Cassius... that you would have me seek into myself...for that which is not in me?
Give five rational numbers lying between 3/5 and 4/5. Insert six rational numbers between 3 and 4.
what does the numerator tell us in fraction
Did Maya Angelou's uncle kill the mom's boyfriend after finding out he raped Maya or beat him to death?
solve for x₁ and x₂6x₁+3x₂=606x₁-2x₂=80
factoring-16w²+50wz-21z²  please help me solve
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