What is the discriminant of the quadratic equation 2x^2-7x-3=0?
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4
Answer:
73
Step-by-step explanation:
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Given :
2x² - 7x - 3 = 0
To find :
Discriminant
Solution :
For quadratic equations given by ax² + bx + c = 0,
Discriminant is given by
D = b² - 4ac .
Also , if
- D < 0 , no real solution/ zeros of given equation
- D = 0 , Only one real solution/zeros of given Equation
- D > 0 , Two real and different real Solution/zeros of given equation
Now , comparing given quadratic equations ( 2x² - 7x - 3 = 0 ) , with General quadratic equations ( ax² + bx + c = 0 ), we get
- a = 2
- b = (-7)
- c = (-3)
Therefore,
D = (-7)² - (4)(2)(-3)
D = 49 - (-24)
D = 49 + 24
D = 73
[ Note - As D > 0 , this equation will have two real and different real Solution/zeros. ]
ANSWER :
Discriminant = 73
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