Question:
Sample Question 1: If one zero of the quadratic polynomial x2 3x k is 2, then the value of k is (A) 10 (B) –10 (C) 5 (D) –5
Answer:
Given quadratic polynomial is: x2 + 3x + k
One zero is 2.
Let another zero is a
Now, a + 2 = -3
=> a = -3 - 2
=> a = -5
and a * 2 = k
=> k = -5 * 2
=> k = -10
So, the value of l is -10. Hence, option B is correct answer.
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