Question

यदि x +y= 4 और x²-y² = 8 तो x-y =?​

Answer 1

Answer:

2

Step-by-step explanation:

(x-y)(x+y) = 8

(x-y)4 = 8

x-y = 2

Answer 2

Answer:

2

Step-by-step explanation:

x+y=4

=> y=4-x

x²-y²=8

=> x²-(4-x)²=8

=> x²-(16-8x+x²)=8

=> x²-16+8x-x²=8

=> 8x-16=8

=> 8x=24

=> x=24/8

=> x=3

x+y=4

=> 3+y=4

=> y=1

• x=3
• y=1

x-y=

=> 3-1

=> 2