Question

Answer these questions in correctly way, no wrong answers please!​

Answer 1

Answer:

answer of question 18 is -11/52,

answer of question 19 is -3/28,

answer of question 20 is if a=0 ,b=0 then a+ b = 0 ,

answer of question 21 is 35/54

Answer 2

Answer:

18 is -11/52,

19 is -3/28,

20 is if a=0,b=0 then a+ b = 0,

21 is 35/54

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