Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 Quantitative Aptitude Algebra Quadratic Equation
Which of the following is a quadratic equation?
1
x2 + 2x + 1 = (4 – x)2 + 3
2
–2x2 = (5 – x) \(\rm \left(2x-\frac{2}{5}\right)\)
3
(k + 1)x2 + \( \frac{3}{2}x=7\), where k = –1
4
x3 – x2 = (x – 1)3