What should be added to 49 m²+25 n² to make it a perfect square? Write the perfect square expression so obtained.
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Answered by
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70mn
Step-by-step explanation:
49m^2+25n^2 are part of an incomplete expansion
formula of expansion is
(a+b)^2 = a^2+b^2+2ab
square root of 49m^2 is 7m
square root of 25n^2 is 5n
therefore substituting 2ab here
we get
2×7m×5n= 70mn
Hope this helps...
Answered by
0
Answer:
What should be added to 49 m2
+ 25 n2
to make it a perfect square? Write
the perfect square expression so obtained .
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