Question

Std. IX Maths Part - I
-2-
B
Q.2 - A) Complete any two activity of the following subquestions.
1) If 5m-n=3m + 4n then to find the value of
m? + n2
complete the following activity.
2
2
m
Solution : 5m-n = 3m + 4n
... 5m - 3m= 4n +
.. 2m = 5n
2m
5n
(dividing by n)
n
n
la mia
m
5
2
n
(squaring both sides)
2
n
25 +4.
29
m? + n2
m 2
(using componendo
dividendo)
2
-
n​

Answer 1

Answer:

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