the number of real zeros of x4 - 1 = (A) 1 (B) 2 (C) 3 (D) 4
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Answered by
2
Answer:
(c)3
Step-by-step explanation:
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Answer:
ANSWER
We need to find number of solution(s) of x
4
+8x
2
+16=4x
2
−12x+9
⇒(x
2
+4)
2
=(2x−3)
2
⇒x
2
+4=±(2x−3)
⇒x
2
+2x+1=0 or x
2
−2x+7=0
⇒(x+1)
2
=0 or no solution .
⇒x=−1
(c)3 is the answer.
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