Question

Pls give and of 43 and 44

Answer 1

Answer:

44. is

${x}^{2} + {y}^{2}$

43. is option B

Step-by-step explanation:

in case of any questions where you need to find the value of a particular variable or a constant always try to separate the variable or constant from it's adjacent terms and make the other terms other than what must be found to 0 so that you can get the required answer . This is a way you do in fast paced exams so that you donot need to go through intense and time taking calculations

similarly options substitution is another best way but not just do blind substitution of all options just put all. common values of all the options and just substitute the varying ones

same to that by substitution I have found the answers in just 2 min of both the question

43- there putting +1,-1and 2, -2 as x doesn't make any change similarly

just put the varying values of y in it you must get the answer

44- put n=2 in the 1st equation and obtain x and y values for n=2 put the same n value in equation 2 and check the options in which you get the same value when we put n=2 in 2nd equation