Question

If a-b and a+b and a are zeroes of polynomial 2x^3-6x^2+5x-7=0, find a

Answer 1

Answer:

1

Step-by-step explanation:

Sum of zeroes in a quadratic equation is

-> sum of zeroes = -(coefficient of x^2)/coefficient of x^3

i.e. -(-6)/2 = a-b + a+b + a

gives 3a = 3

a = 1

Thank You!!

Answer 2

Step-by-step explanation:

in a cubic polynomial,

sum of roots=-b/a. - coff of x²/coff of x³

-(-6)/2= a+b+a-b+a

3a=3

a=1