Question
Find the zeroes of the polynomial x2−2.
Answer: Option C
:
C
To find the zeroes, equate the givenpolynomial to zero.
x2−2=0
Using the identity,a2−b2=(a+b)(a−b)
⇒(x+√2)(x−√2)=0
⇒x+√2=0andx−√2=0
⇒x=−√2andx=√2
Hence, the zeroes are√2,−√2.
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:
C
To find the zeroes, equate the givenpolynomial to zero.
x2−2=0
Using the identity,a2−b2=(a+b)(a−b)
⇒(x+√2)(x−√2)=0
⇒x+√2=0andx−√2=0
⇒x=−√2andx=√2
Hence, the zeroes are√2,−√2.
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