xsqare-x+2=0 what is the value of x
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1
Answer:
Step-by-step explanation:
∣x
2
∣+∣x∣−2=0
or, ∣x∣
2
+∣x∣−2=0 [ Since ∣x
2
∣=∣x∣
2
for real x]
or, ∣x∣
2
+2∣x∣−∣x∣−2=0
or, (∣x∣−1)(∣x∣+2)=0
or, ∣x∣=1 [∣x∣
=−2 since |x| is always >0]
or, x=±1
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