$3x2+bx+c=0$

has roots x1 = -26 and x2 = -86. Calculate the coefficients b and c.

Correct result:

b =  336
c =  6708

#### Solution:

$b = 3 \cdot (26 +86) = 336$
$c = 3 \cdot (-26) \cdot (-86) = 6708 \ \\ \ \\ 3x^2 +336x +6708=0 \ \\$

We would be very happy if you find an error in the example, spelling mistakes, or inaccuracies, and please send it to us. We thank you!

Tips to related online calculators
Looking for help with calculating roots of a quadratic equation?
Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

## Next similar math problems:

• Roots
Determine the quadratic equation absolute coefficient q, that the equation has a real double root and the root x calculate: ?
• Equation
Equation ? has one root x1 = 8. Determine the coefficient b and the second root x2.
• Square root 2
If the square root of 3m2 +22 and -x = 0, and x=7, what is m?
Find the roots of the quadratic equation: 3x2-4x + (-4) = 0.
• Equation with abs value
How many solutions has the equation ? in the real numbers?
• Tubes
Iron tubes in the warehouse are stored in layers so that each tube top layer fit into the gaps of the lower layer. How many layers are needed to deposit 100 tubes if top layer has 9 tubes? How many tubes are in bottom layer of tubes?
• Cinema 4
In cinema are 1656 seats and in the last row are 105 seats , in each next row 3 seats less. How many are the total rows in cinema?
• Solve 3
Solve quadratic equation: (6n+1) (4n-1) = 3n2
• Discriminant
Determine the discriminant of the equation: ?
• Variable
Find variable P: PP plus P x P plus P = 160
• Reciprocal equation 2
Solve this equation: x + 5/x - 6 = 4/11
• Evaluation of expressions
If a2-3a+1=0, find (i)a2+1/a2 (ii) a3+1/a3
• The product
The product of a number plus that number and its inverse is two and one-half. What is the inverse of this number
• Function 3
Function f(x)=a(x-r)(x-s) the graph of the function has x- intercept at (-4, 0) and (2, 0) and passes through the point (-2,-8). Find constant a, r, s.