1. Which of the following is a quadratic equation?
A) x2 + x3 = 2 B)p(p – 3) = 0 C) x2 = 6 + x2 - x D) x2 + 1 = 5
Answers
Answered by
0
Answer:
B and D
Step-by-step explanation:
the highest power in the equation has to be 2 for a quadratic equation. C is not a quadratic equation because X2 terms cancel out since they are on both sides
Answered by
0
Answer:
2
+(p+iq)x+3i=0
α+β=−(p−iq),αβ=3i
α
2
+β
2
=(α+β)
2
−2αβ=[−(p+iq)]
2
−6i
=(p
2
−q
2
)+i(2pq−6)=8
⇒p
2
−q
2
=8 and pq=3
⇒p=3,q=1 or p=−3,q=−1
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