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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).
Can 5x2 plus 2x-4 equals 2x2 be solved using the quadratic formula?
Yes
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.
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.
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
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.
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
