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Correct form. 2X^2 - 2X - 1 = 0
- b +/- sqrt(b^2 - 4ac)/2a
quadratic formula
a = 2
b = - 2
c = -1
-(-2) +/- sqrt[(-2)^2 - 4(2)(-1)]/2(2)
2 +/- sqrt( 4 + 8)/4
2 +/- 2sqrt(3)/4
exact answer, less final factoring
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∙ 13y ago
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What are the values of x in this quadratic equation 2x squared-x-5 equals 0?
2x2 - x - 5 = 0 x = [1 +/- sqrt(1 + 40)]/4 = [1 +/- sqrt(41)]/4 = -1.35078 and 1.85078
What is x when 2x2 - x - 6 equals 0?
2 X 2 - x - 6 = 04 -6 - x = 0- x = 2x = -2Another contributor's answer:This appears to be a quadratic equation question in form of:2x2-x-6 = 0When factorised:(2x+3)(x-2) = 0Therefore: x = -3/2 or x = 2
What is x squared minus 2x plus 5 equals 0?
It is a quadratic equation with one unknown variable, x which has no real roots.
How do you solve for x in the equation x2-2x-2 equals 0?
To solve for x in the equation x2 - 2x - 2 = 0, use the quadratic equation, that is: For 0 = ax2 + bx + c, the roots (values of x) are defined as: x = [-b +/- sqrt(b2 - 4ac) ] / 2a (If that's hard to understand, google "quadratic formula"). It works out to x = 2.73, -0.73.
I need An answer for 2x square -3x-2 0?
there is no problem with this quadratic equation it's 2x square - 3x -2 = 0 I need an answer. where it says square there should be a little 2 at the top corner of the 2x to make it 2x square thanks If you can't factor it easily then use the quadratic equation: The two solutions are: 2 & -.5
What are the roots of the quadratic equation y equals 2x2 plus 3x-20?
2x2 + 3x - 20 = (x + 4)(2x - 5).
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.
Can 5x2 plus 2x-4 equals 2x2 be solved using the quadratic formula?
Yes
What is 2x squared plus x minus 1 equals zero in quadratic form?
It is, as stated, 2x2 + x - 1 = 0. That is the quadratic form.
Is 3x4 plus 2x plus 5 equals 0 a quadratic equation?
No. It is a quartic equation. The largest power of x in a quadratic equation must be 2.
Solve this quadratic equation using the quadratic formula 2x2 - 2x equals 1?
2x2-2x=12x2-2x-1=0a=2 b=-2 c=-1x= (-b +- sqr(b2-4ac))/2ax= (2 +- sqr(4 + 8))/4x= (2 +- sqr(12))/4x = 1/2 +- sqr(12)/4x ~= .5 +- 0.8660x ~=-0.3660 or x ~= 1.3660
How many solutions will the equation 25 equals 2x squared 6x have?
The quadratic equation will have two solutions.
Solve this quadratic equation x2 plus 2x - 22 equals 0?
Using the quadratic equation formula:- x = 3.795831523 or x = -5.795831523
What is -2x squared plus 3x plus 5 equals 0?
It is a quadratic equation.
Is 5xy plus 2x plus 1 equals 0 a quadratic equation?
No.No.No.No.
What is 2x2 - 12x - 54 equals o find x?
2x2-12x-54 = 0 Solve by factoring or using the quadratic equation formula or by completing the square: (2x+6)(x-9) = 0 Therefore: x = -3 or x = 9
What are the values of x in 2x2 -3 equals -6x -2?
2x2-3 = -6x-2 2x2+6x-3+2 = 0 2x2+6x-1 = 0 When factored with the help of the quadratic equation formula: (2x-0.3166247904)(x+3.1583123952) = 0 Therefore: x = 0.1583123952 and also x = -3.1583123952
