Answer these questions in correctly way, no wrong answers please!
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1
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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
Answered by
1
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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