What if x^2 - y^2 = 16 and x + y = 8 then x - y = ?
- 4
- 2
- 3
- none of these
Explanation
x + y =8
if x=5 and y=3
5^2 - 3^2 =2 5–9 =16, condition satisfied.
x-y = 5–3
=2
ND27-5-2023
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