(−8+7√8 - 3√8) is
a rational number
an irrational number
a number equal to zero
none of these
Answers
Answered by
0
Answer:
an rational number
Explanation:
it is so because,
-8+7√8-3√8
=-8+4√8
=-8+4into4
=-8+16
=8
8 is a rational no.
so the Ans is rational no.
Answered by
0
Answer:
It is irrational
Explanation:
-8+7√8-3√8
-8+7√2x2x2-3√2x2x2
(Their is a pair of 2 which will come out n be multiplied by 7 and 3)
-8+7x2√2-3√2
-8+14√2-6√2
(Here only 14√2 and -6√2 will be subtracted not -8 as both 14 and -6 has √2 as its common )
so the Ans will be
-8+8√2 (answer) which is irrational because of √2
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