SOLUTION: Use the Quadratic Formula to solve the equation. -2x2 - 5x + 5 = 0 A) -5/2 [+ or -] √65/2 B) -4/5 [+ or -] √130/4 C) -5/4 [+ or -] √32/2 D) -5/4 [+

Algebra ->  Equations -> SOLUTION: Use the Quadratic Formula to solve the equation. -2x2 - 5x + 5 = 0 A) -5/2 [+ or -] √65/2 B) -4/5 [+ or -] √130/4 C) -5/4 [+ or -] √32/2 D) -5/4 [+      Log On


   

Question 668991: Use the Quadratic Formula to solve the equation.
-2x2 - 5x + 5 = 0
A) -5/2 [+ or -] √65/2
B) -4/5 [+ or -] √130/4
C) -5/4 [+ or -] √32/2
D) -5/4 [+ or -] √65/4
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

-2x2 - 5x + 5 = 0   ||Standard form:  ax^2 + bx + c = 0

x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+

x+=+%285+%2B-+sqrt%28+25+%2B+40+%29%29%2F%28-4%29+

x+=+%285+%2B-+sqrt%28+65+%29%29%2F%28-4%29+

x+=+-5%2F4+%2B-+sqrt%28+65+%29%2F4