if x2 --y2 = 49 and ( x +y) =7 then x -y =
Answers
Answered by
2
Answer:
7
Step-by-step explanation:
(x+y)(x-y)=x2-y2.....
7(x-y)=49
x-y=7
Answered by
0
Answer:
(x-y) = 7
Step-by-step explanation:
x² - y² = 49
=> (x + y) (x - y) = 49
=> ( 7 ) (x - y) = 49
=> (x-y) = 7
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