Which of the following is a quadratic equation?
(a) x2 + 2x + 1 = (4 – x)2 + 3
(b) – 2x2 = (5 – x) (2x – 2/5)
(c) (k + 1)x2 + – 3/2x = 7, where k = -1
(d) x3 – x2 =(x -1)3
CBSE_NCERT_EXEMPLAR
CLASS X
( Please give known answer )
Answers
Answer:
Option no. B
- 2*2 = (5 - x) (2x - 2/5)
Answer:
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