SA3 marksYear: 2024MediumCBSE Class 10
polynomialszeroessum-product-relationverification
Question
Find the zeroes of the polynomial 4x2+4x−3 and verify the relationship between zeroes and coefficients of the polynomial.
Solution
1
P(x)=4x2+4x−3=(2x+3)(2x−1)
+1 mark2
Zeroes are 2−3 and 21
+0.5 marks3
Sum of zeroes =2−3+21=−1=4−4=coefficient of x2−(coefficient of x) ✓
+0.5 marks4
Product of zeroes =2−3×21=4−3=coefficient of x2constant term ✓
+1 mark