Question

Plz help me with this

Answer 1

I’m pretty sure the answer is B.

Answer 2

Answer:
`\bold{b)\quad (-2\pm √(14))/(2)}`

Explanation:

`2x^2+4x-5=0\qquad \implies\qquad a=2,\ b=4,\ c=-5\\\\\text{The quadratic equation is not factorable so use the Quadratic Formula:}\\x=(-b\pm √(b^2-4ac))/(2a)\\\\\\x=(-4\pm √(4^2-4(2)(-5)))/(2(2))\\\\\\.\ =(-4\pm √(16+40))/(4)\\\\\\.\ =(-4\pm √(56))/(4)\\\\\\.\ =(-4\pm 2√(14))/(4)\\\\\\.\ =\large\boxed{(-2\pm √(14))/(2)}`