which of the following is not irrational?
a. (2 – √3)2 b. (√2 + √3)2 c. (√2 -√3)(√2 + √3) d. √7/7
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Answer: c
(√2 -√3)(√2 + √3) =(√2)
(√2 -√3)(√2 + √3)
=(√2) ^2-(√3) ^2 similar to a^2-b^2=(a-b) (a+b)
=2-3
=-1
which is not irrational number
Step-by-step explanation:
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