Question

the discriminant of quadratic equation 2x+x-6 = 0 a. -11 b. 13 c. 25 d. 49​

Answer 1

Step-by-step explanation:

b^2-4ac = 1-(4*2*(-6))

= 1+48

=49

ans :

49

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Answer 2

Answer :

• 49

Given :

• 2x + x - 6 = 0

To find :

• Discriminant of Qudratic equation

Solution :

• 2x + x - 6 = 0

Here,

• a = 2
• b = 1
• c = (-6)

We know that

• Discriminant (D) = b² - 4ac

Where

• b = 1
• a = 2
• c = (-6)

Substituting the value :

➞ D = b² - 4ac

➞ D = (1)² - 4 × 2 × (-6)

➞ D = 1 - 8 × (-6)

➞ D = 1 - (-48)

➞ D = 1 + 48

➞ D = 49

Verification :

➞ D = b² - 4ac

➞ 49 = (1)² - 4 × 2 × (-6)

➞ 49 = 1 - 8 × (-6)

➞ 49 = 1 - (-48)

➞ 49 = 1 + 48

➞ 49 = 49

Hence , Verified