Question 1 Which of the following is a quadratic equation? (a) x2+2x+1=(4–x)2+3 (b) −2x2=(5−x)(2x−25) (c) (k+1)x2+32 x=7, where k−=−1 (d) x3−x2=(x−1)3

Question 1 Which of the following is a quadratic equation? (a) x2+2x+1

1.	Question 1 Which of the following is a quadratic equation? (a) x2+2x+1=(4–x)2+3 (b) −2x2=(5−x)(2x−25) (c) (k+1)x2+32 x=7, where k−=−1 (d) x3−x2=(x−1)3
Answer» Question 1 Which of the following is a quadratic equation? (a) $x^{2} + 2 x + 1 = (4 - x)^{2} + 3$ (b) $- 2 x^{2} = (5 - x) (2 x - \frac{2}{5})$ (c) $(k + 1) x^{2} + \frac{3}{2} x = 7, w h e r e k - = - 1$ (d) $x^{3} - x^{2} = (x - 1)^{3}$

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Question 1 Which of the following is a quadratic equation? (a) x2+2x+1=(4–x)2+3 (b) −2x2=(5−x)(2x−25) (c) (k+1)x2+32 x=7, where k−=−1​​​​​​​ (d) x3−x2=(x−1)3​​​​​​​

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Question 1 Which of the following is a quadratic equation? (a) x2+2x+1=(4–x)2+3 (b) −2x2=(5−x)(2x−25) (c) (k+1)x2+32 x=7, where k−=−1 (d) x3−x2=(x−1)3