If m²-n² = 7 , where m,n € Z, then no.of ordered pairs ( m,n ) is
A. 1
B. 2
C. 3
D. 4
Please ans it fast
Answers
Answered by
6
Given m^2 -n^2 = 7..
= > (m + n)(m - n) = 7
(i)
Let m = 4, n = 3.
= > (4 + 3)(4 - 1)
= > (7)(1)
= > 7.
(ii) Let m = -4 n = -3.
= > (-4 + - 3)(-4 + 3)
= > (-7)(-1)
= > 7.
Therefore the number of ordered pairs = 2.
Hope this helps!
= > (m + n)(m - n) = 7
(i)
Let m = 4, n = 3.
= > (4 + 3)(4 - 1)
= > (7)(1)
= > 7.
(ii) Let m = -4 n = -3.
= > (-4 + - 3)(-4 + 3)
= > (-7)(-1)
= > 7.
Therefore the number of ordered pairs = 2.
Hope this helps!
siddhartharao77:
:-)
Answered by
1
Answer:
2
Step-by-step explanation:
Given m^2 -n^2 = 7..
= > (m + n)(m - n) = 7
(i)
Let m = 4, n = 3.
= > (4 + 3)(4 - 3)
= > (7)(1)
= > 7.
(ii) Let m = -4 n = -3.
= > (-4 + - 3)(-4 + 3)
= > (-7)(-1)
= > 7.
Therefore the number of ordered pairs = 2.
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