Question

1 point
+
4. If one zero of the quadratic
polynomial x2 + 3x + b is 2, then
the value of b is - 10.
(True/False)
True
False​

Answer 1

Given :

• Equation is x² + 3x + b

• One of the zeroes is 2

____________________

To Find :

• Value of b

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Solution :

Take given polynomial :

⇒x² + 3x + b = 0

Put x = 2

⇒(2)² + 3(2) + b = 0

⇒ 4 + 6 + b = 0

⇒10 + b = 0

⇒b = -10

➜ Value of b is -10