Question

if x2-y2=8 then x-y=2 find the value of y​

Answer 1

Answer:

y=1

Step-by-step explanation:

X2=8+y2. x=2+y

(2+y)2=8+y2

4+y2+4y=8+y2

4y=4

y=1

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Answer 2

Answer

TO BE FIND:-

• y

GIVEN:-

• x²-y²=8
• x-y=2

EXPLANATION:-

==>x²-y²=8,  x-y=2

==>x²-y²=(x+y)(x-y)  

SUBSTITUTE:-

==>8=(x+y)(2)

==>4=x+y  

WE GOT:-

• x+y=4
• x-y=2

SOLVE:-

• x=3
• y=1

==>FINAL ANSWER Y=1 <==