0
By using the quadratic formula.
-b +/- sqrt(b^2-4ac)/2a
a = 2
b = 8
c = 5
-8 +/- sqrt(8^2-4(2)(5))/2(2)
-8 +/- sqrt(64-40)/4
-8 +/-sqrt(24)/4
X = -0.7752551286
X = -3.224744871
my TI-84 graphing calculator confirms this.
you may want that exact answer
What else can I help you with?
How would you solve 2x plus 1 equals 9?
2x+1 = 9 2x = 9-1 2x = 8 x = 4
What is 4x squared minus 5x squared plus 2x?
-x2+2x
How do you factor 2x squared plus 8x plus 20 equals 0?
It can not be factored because its discriminant is less than zero
What is 2x squared plus 2x?
2x2 + 2x = 2x(x+1)
Solve 3x plus 2x equals -4?
3x + 2x = 5x. 5x= (-4) X = (-4)/5 x= -0.8
Solve x squared plus 2x - 13 equals 2?
(x - 3)(x + 5)
How do you solve 2X plus 5 squared equals 7?
2x + 52 = 7 2x + 25 = 7 2x = 7 - 25 2x = -18 x = -18/2 x = -9
How do you solve x squared plus 55 -2x equals 90?
x2 - 2x + 55 = 90x2 - 2x - 35 = 0(x+5)(x-7) = 0x = -5, 7
What is the answer to 7x squared plus 2x equals 0?
63828
Is -2x squared plus 2x plus 1 equals 9 a quadratic equation?
Yes it is. The thing that makes it a quadratic equation is that "x squared" in there.
How do you solve solve for x 2x plus a equals p?
2x+a=p 2x=p-a x=.5p-.5a
Y plus 2x equals 0 solve for y?
y= -2x
How do you solve x squared plus x squared plus x?
Add the x's squared together to get 2x^2+x. You cannot add anymore so the answer is 2x^2+x
How do you solve y equals 2x squared plus 1?
The solution comprises every point on a parabola which is symmetric about the y axis and has its apex at (0,1).
What is -2x squared plus 3x plus 5 equals 0?
It is a quadratic equation.
How do you solve 2x squared plus x plus 2 equals 0 by completing the square?
It cannot be solved because the discriminant of the quadratic equation is less than zero
Solve 2x plus 3 equals 9?
3
