MCQ1 markYear: 2024MediumCBSE Class 10
polynomialszeroessum-of-zeroes
Question
The zeroes of a polynomial x2+px+q are twice the zeroes of the polynomial 4x2−5x−6. The value of p is:
Solution
1
Zeroes of 4x2−5x−6: sum =45
If zeroes of x2+px+q are twice, sum of new zeroes =2×45=25
Sum of zeroes =−p=25⇒p=−25
+1 mark