sumaiyafaisalt
sumaiyafaisalt sumaiyafaisalt
  • 03-06-2021
  • Mathematics
contestada

Find xy if x + y=3, x^2 + y^2 = 5

Respuesta :

sk5634943
sk5634943 sk5634943
  • 03-06-2021

Answer:

mark me

Step-by-step explanation:

x+y=3

x=3-y

putting the value of x

in this

x²+y²=5

(3-y) ²+y²=5

9-6y+y²+y²=5

2y²-6y+9-5=0

2y²-6y+4=0

2y²-4y-2y+4=0

2y(y-2)-2(y-2)=0

(2y-2) (y-2) =0

2y-2=0 or y-2=0

y=1 or y=2

so x=2 or 1

so x×y=2×1 or 1×2=2

I HOPE THIS WILL HELP YOU MARK ME BRAINLIEST

Answer Link

Otras preguntas

what is 15.70796327 rounded to 1 decimal point?
There are two ways of adding two square numbers to make 65. Write a different square number in each box. [ ] + [ ].
What is the most dense thing in the world
List five kinds of cases that come under the judicial power of the United States courts.
WHAT COULD HAPPEN IN THE BODY IF PROTEINS OR ENZYMES LOST THEIR CONFORMATIONS OR WERE DENATURED?
Is there DNA in our food? How do you know?
There are two ways of adding two square numbers to make 65. Write a different square number in each box. [ ] + [ ].
Sam evaluated the expression x2y for x = 7 and y = 9. He got a value of 49. Which of the following statements is correct
Which words in this sentence are common nouns? Until the Spaniards brought cattle and sheep from Europe, the Aztecs had no dairy products. Choose all answers th
plz helpp with this french hw!