Question

prove that x2 + 2x + 3 has no zero​

Answer 1

Answer:

Discriminant = b^2 - 4ac = 2^2 - 4(1)(3) = 4 - 12 = -8

Since, discriminant is negative, so it has no real root. Hence this has no zero.

Answer 2

Answer:

2x + 2x + 3 = 0

2x + 3 = -2

3 = 0

hence 3 is not = to 0