Transfer error: 1/4 m^2 becomes1/2 m^2
1/4m^2 is not equal to 1/2m X1/2m as the square is only for m.
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1/4m^2 is not equal to (1/2m)^2 as the increase in power is only for the m and not the 1/2.
The 9/16 should be 3/4
he did not factorize it correctly for (9/16n)(9/16n) as there is 9/16n^2 , he had forgotten to square root 9/16, thus it should be 3/4. therefore, (14) 1/4m^2 - 9/16n^2 = (1/2m)(1/2m) - (3/4n)(3/4n) = (1/2m + 3/4n)(1/2m - 3/4n)
1/4m^2 - 9/16n^2=(1/2m)(1/2m)-(3/4n)(3/4n)=(1/2m+3/4n)(1/2m-3/4n) #
The 2nd part is wrong it should be=(0.5m)(0.5m) - (3/4n)(3/4n)
(9/16n)x(9/16n) is not 9/16n^2 And therefore the answer should be m^2/4-9n^2/16
(9/16n)(9/16n) is not equal to 9/16n^2 so it should be (3/4n)(3/4n) and the answer should be (1/2m+3/4n)(1/2m-3/4n). I think is a careless mistake as he had done it correctly for 1/4m^2 which basically had the same concept as the 9/16n^2.
Transfer ERROR-9/16n^2 doesn't equal to -(9/16n)(9/16n)-9/16n^2 equals to -(3/4n)(3/4n)
-9/16n^2 does not equal to -(9/16n)(9/16n)-9/16n^2should be equal to -(3/4n)(3/4n) because it has to be factorised too.
Transfer error.-9/16n^2 is not equal to -(9/16n)(9/16n) -9/16n^2 is equal to -(3/4n)(3/4n)