Question

find the roots of the following quadratic equations,if they exist, using the quadratic formula x2+4x+5=0​

Answer 1

x2 + 4x + 5 = 0. Here, a = 1, b = 4, c = 5. So, b2 – 4ac = 16 – 20 = – 4 < 0. Since the square of a real number cannot be negative, therefore √b2-4ac not have any real value.