Discriminant

Determine the discriminant of the equation:

$7x2-x+7=1$

Result

D =  -167

Solution:

$D = b^2-4ac = (-1)^2-4\cdot 7\cdot (7 - 1) = -167$

Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!

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

Be the first to comment!

Tips to related online calculators

Next similar math problems:

1. Variations 4/2
Determine the number of items when the count of variations of fourth class without repeating is 600 times larger than the count of variations of second class without repetition.
2. Roots
Determine the quadratic equation absolute coefficient q, that the equation has a real double root and the root x calculate: ?
3. Equation
Equation ? has one root x1 = 8. Determine the coefficient b and the second root x2.
Find the roots of the quadratic equation: 3x2-4x + (-4) = 0.
5. Combinations
How many elements can form six times more combinations fourth class than combination of the second class?
Which of the points belong function f:y= 2x2- 3x + 1 : A(-2, 15) B (3,10) C (1,4)
7. Square root 2
If the square root of 3m2 +22 and -x = 0, and x=7, what is m?
8. Combinations
From how many elements we can create 990 combinations 2nd class without repeating?
9. Solve 3
Solve quadratic equation: (6n+1) (4n-1) = 3n2
11. Reciprocal equation 2
Solve this equation: x + 5/x - 6 = 4/11
12. Variable
Find variable P: PP plus P x P plus P = 160
13. Median and modus
Radka made 50 throws with a dice. The table saw fit individual dice's wall frequency: Wall Number: 1 2 3 4 5 6 frequency: 8 7 5 11 6 13 Calculate the modus and median of the wall numbers that Radka fell.
14. Complex number coordinates
Which coordinates show the location of -2+3i
15. Seats
Seats in the sport hall are organized so that each subsequent row has five more seats. First has 10 seats. How many seats are: a) in the eighth row b) in the eighteenth row
16. Theorem prove
We want to prove the sentence: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?
17. Fish tank
A fish tank at a pet store has 8 zebra fish. In how many different ways can George choose 2 zebra fish to buy?