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

User Applecow
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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. 
User HK Boy
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3 votes

Answer:


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)

User RAKESH HOLKAR
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