# EQ2

Solve quadratic equation: Result

x =  2.97

#### Solution:

2x²- 2(x-7)²+5x=0

33x = 98

x = 9833 ≈ 2.969697

Calculated by our simple equation calculator.

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments: Be the first to comment! #### To solve this example are needed these knowledge from mathematics:

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 examples:

1. Solve 3 Solve quadratic equation: (6n+1) (4n-1) = 3n2
2. Equation with abs Solve this equation with absolute value member: ?
3. Quadratic equation Quadratic equation ? has roots x1 = 80 and x2 = 78. Calculate the coefficients b and c.
4. Time gone Square of Richard age equals the age of his mother. When he will bw two times older then his mom will be 7/2 times older than he. How old is Richard and his mom?
5. Square Number If to a square of integer number add 31, we get the square of next integer number. What is the original number?
6. Product - quadratic equation Product of two numbers is 900. If we increase lowest number by 2 then product will increase by 150. Determine both numbers.
7. Equation Equation ? has one root x1 = 8. Determine the coefficient b and the second root x2.
8. Roots Determine the quadratic equation absolute coefficient q, that the equation has a real double root and the root x calculate: ?
9. Quadratic equation Find the roots of the quadratic equation: 3x2-4x + (-4) = 0.
10. Fraction For what x expression ? equals zero?
11. Discriminant Determine the discriminant of the equation: ?
12. Boxes 200 boxes have been straightened in three rows. The first was 13 more than in the second, and in the second was one fifth more than in the third one. How many boxes are in each row?
13. Fifth of the number The fifth of the number is by 24 less than that number. What is the number?
14. Pine How much of a mixed forest rangers want to cut down, if their head said: "We only cut down pine trees, which in our mixed forest 98%. After cut pine trees constitute 94% of all trees left."
15. Mean if the mean of the set of data 5, 17, 19, 14, 15, 17, 7, 11, 16, 19, 5, 5, 10, 8, 13, 14, 4, 2, 17, 11, x is -91.74, what is the value of x?
16. Pears Andrew, Lenka and Rasto have together 232 pears. Lenka has 28 more than Rasto and Rasto pears have 96 more than Andrew. Determine how much each of them has pears.
17. Theorem prove We want to prove the sentense: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?