Question

classify the following numbers as ration or irrational a.4-2√3 b.(√2+1)+(√2-1) c.(√5+1) (√5-1)






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Answer 1

Step-by-step explanation:

(i) 2−5:

Since 5 is an irrational number, 2−5 is also an irrational number.

(ii) (3+23)−23:

(3+23)−23 =3+23−23=3, which is a rational number.

(iii) 7727=72:

7727=72, which is a rational number.

(iv) 21:

Since 2 is an irrational number, 21, which is also an irrational number.

Answer 2

Answer:

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