Question

Use the Quadratic Formula to solve the equation. -2x2 - 5x + 5 = 0

Answer 1

The formula is x = (-b plus or minus sqrt(b^2 - 4ac))/2a, where a = -2, b = -5, and c=5 in your formula. When you solve, the answer is -5/4 plus or minus sqrt(65)/4. 

Answer 2

`x=(5+√(65))/(-4)`and
`x=(5-√(65))/(-4)`

Explanation:

We are given that an equation

`-2x^2-5x+5=0`

We have to solve the equation using by quadratic formula

`ax^2+bx+c=0`

`x=(-b\pm√(D))/(2a)`

`D=b^2-4ac`

We have a=-2,b=-5 and c=5

`D=(-5)^2-4* (-2)* 5=25+40=65`

`x=(-(-5)\pm√(65))/(2(-2))`

`x=(5+√(65))/(-4)`and
`x=(5-√(65))/(-4)`