0
X^2 - 2X - 13 = 0
X = -b +/- sqrt(b^2-4ac)/2a
a = 1
b = -2
c = -13
X = -(-2) +/- sqrt[(-2)^2 - 4(1)(-13)]/2(1)
X = 2 +/- sqrt(56)/2
2 +/- [2sqrt(14)]/2
Side note: Don't forget to reduce the three twos!
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Is 2x-5 equals 0 Linear or Quadratic?
Linear.
What are lines given by the equations y equals 2x and y equals 2x plus 1?
They are parallel.
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 the following quadratic equations with the India method A. x2-2x-13 equals 0 B. 4x2-4x plus 3 equals 0 C. x2 plus 12x-64 equals 0 D. 2x2-3x-5 equals 0?
Simply by using the formula x= -b +/- Underroot of (b2 - 4.a.c) / 2.a 2+x-6=2x+4
What is 3x squared plus 2x minus 8 equals 0?
3x2 + 2x - 8 = 0 is a quadratic equation.
Is this equation a quadriatic equation 3x³ plus 2x equals -3?
no only equations with x2 and lower powers can be considered quadratic. those with x3 cannot be considered quadratic, just as x2 cannot be considered linear
What are the solutions to the equations 7x-4y equals 13 and 2x-5y equals -4?
It works out that the solutions are: x = 3 and y = 2
Is 2x-5 equals 0 Linear or Quadratic?
Linear.
What are lines given by the equations y equals 2x and y equals 2x plus 1?
They are parallel.
How do you solve x plus y equals 8 and 2x minus y equals 5 using the addition method?
If: x+y = 8 and 2x-y = 5 Then by adding the equations together: 3x = 13 or x = 13/3 By substitution into the original equations: x = 13/3 and y = 11/3
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 the following quadratic equations with the India method A. x2-2x-13 equals 0 B. 4x2-4x plus 3 equals 0 C. x2 plus 12x-64 equals 0 D. 2x2-3x-5 equals 0?
Simply by using the formula x= -b +/- Underroot of (b2 - 4.a.c) / 2.a 2+x-6=2x+4
The system of equations 3x-6y equals 20 and 2x-4y equals 3 is?
the system of equations 3x-6y=20 and 2x-4y =3 is?Well its inconsistent.
Use the substitution method to solve the system of equations Choose the correct ordered pair 2x plus 3y equals 13 x equals 2?
(2,3)
What is the answer to 2x plus 5 equals equals 13?
2x + 5 = 13 2x = 8 2x/2 = 8/2 x=4
What is 3x squared plus 2x minus 8 equals 0?
3x2 + 2x - 8 = 0 is a quadratic equation.
What is -2x squared plus 3x plus 5 equals 0?
It is a quadratic equation.
