Question

show that 2x^2 +5x +5 =0 is not true for any real value of x​

Answer 1

Answer:

$2 {x}^{2} + 5x + 5 = 0 \\ \\ d = {b}^{2} - 4ac = 25 - 4 \times 2 \times 5 = 25 - 40 = - 15 \\ \\ for \: \: d < 0 \: \: no \: real \: \: root$