Question

Which of the following is not a quadratic equation * a.x² + 3x – 5 = 0 b.x² + x³ + 2 = 0 c.3 + x + x² = 0 d,x² – 9 = 0

Answer 1

Answer:

x2+5x+3-x=0⇒x2+4x+3=0. So, it is of the form ax 2 + bx + c = 0 where a = 1, b = 4 and c = 3. (4) 3m2 = 2m2 – 9 ⇒3m2-2m2+9=0⇒m2+0m+9=0