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Which of the following is a quadratic eq...

Which of the following is a quadratic equation?
(i) `x^(2)+2x+1=(4-x)^(2)+3` (ii) `-2x^(2)=(5-x)(2x-(2)/(5))`
(iii) `(k+1)x^(2)+(3)/(2)x=7" wherek"=-1` (iv) `x^(3)-x^(2)=(x-1)^(3)`

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To determine which of the given equations is a quadratic equation, we will analyze each equation step by step. ### Step 1: Analyze the First Equation **Equation (i):** \( x^2 + 2x + 1 = (4 - x)^2 + 3 \) 1. Expand the right side: \[ (4 - x)^2 = 16 - 8x + x^2 ...
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