Question

Zero of the quadratic polynomial 2 x square - 8 x minus m is 5/2 then then the value of m is

Answer 1

Step-by-step explanation:

given p(x) = 2x^2 - 8x - m

p(x ) = 0

zero of the quadratic polynomial = 5/2

substitute in p(x)

2× 25/4 - 8×5/2 - m = 0

25/2 - 40/2 -m = 0

-15/2 - m =0

- 15/2 = m

therefore m= - 15/2

Answer 2

Step-by-step explanation:

given p(x)=2 x ^2 - 8x - m

p(x) = 0

zero of the quadratic polynomial= 5/2

substitute in p(x)

2×25/2 - 8×5/2 - m= 0

25/2 - 40/2 - m=0

-15/2 - m = 0

-15/2 - m

therefore m = 15/2