11-01-2020
Mathematics

contestada

if xy=15 and x+y=5, find x^2+y^2

Respuesta :

jimrgrant1 jimrgrant1

11-01-2020

Answer:

- 5

Step-by-step explanation:

Note that

(x + y)² = x² + 2xy + y², thus

x² + y² = (x + y)² - 2xy ← substitute given values

= 5² - 2(15)

= 25 - 30

= - 5

Answer Link

Otras preguntas

Cuando escribes tu y tu familia lleva acento

Who was the most important scientist that came from the renaissance?

simplify -13b2 + 25b2

Could they have ended slavery without a war?

There are 30 homes in Neighborhood A. Each year, the number of homes increases by 20%. Just down the road, Neighborhood B has 45 homes. Each year, 3 new homes a

Kevin borrowed $8000 at a rate of 9.5%, compounded quarterly. Assuming he makes no payments, how much will he owe after 6 years? Do not round any intermediate c

what makes up premise

This may be the most well-known fallacy of presumption:

IF YOU ARE DRIVING WHILE IMPAIRED, COMMIT MANSLAUGHTER OR VEHICULAR HOMICIDE, AND LEAVE THE SCENE OF THE CRIME, YOU WILL BE ?

How long does it take to become a veterinarian?