If the product of the zeroes of the quadratic polynomial p(x)=ax2−6x−6 is 4 , then find the value of a. Also, find the sum of the zeroes of the polynomial.
Q. If the product of the zeroes of the quadratic polynomial p(x)=ax2−6x−6 is 4 , then find the value of a. Also, find the sum of the zeroes of the polynomial.
Find Zeroes of Polynomial: Let's denote the zeroes of the polynomial p(x)=ax2−6x−6 as α (alpha) and β (beta). According to Vieta's formulas, the product of the zeroes of a quadratic polynomial ax2+bx+c is ac. We are given that the product of the zeroes is 4. So, we have: αβ=ac Given that c=−6 and αβ=4, we can write: −a6=4 Now, we solve for α0: α1α2
Calculate Product of Zeroes: Next, we need to find the sum of the zeroes of the polynomial. According to Vieta's formulas, the sum of the zeroes of a quadratic polynomial ax2+bx+c is −b/a. We have:α+β=−b/aGiven that b=−6 and a=−3/2 (from the previous step), we can write:α+β=−(−6)/(−3/2)α+β=6/(−3/2)α+β=6×(−2/3)α+β=−4