Question

if X + Y is equal to 7 upon 2 and X Y is equal to 5 upon 2 find x minus y ​

Answer 1

x+y=7/2  1st equation

xy=5/2 2nd equation

y=5/2x

Substitute in 1st equation

Solutions:

x+5/2x=7/2

2x^2+5=7x

2x^2-7x+5=0

2x^2-2x-5x+5=0

2x(x-1) -5(x-1)=0

Final answer

y =1or 5/2

x= 5/2 or 1

Step-by-step explanation:

I hope this helped!

Answer 2

Answer:

therefore, x = 5/2 or x = 1

y = 5/2 or y = 1

Step-by-step explanation:

Hope these answer may help you...