Question

If -2 is the zeros of the polynomial 2x^2 +lx-10 find the other zeros

Answer 1

Answer:

may this helps you

Step-by-step explanation:

2x^2 - 10

2x^2 = 10

x^2 = 10/2

x^2 = 5

x = plus minus under root 5

Zeros

x =+ root 5. x = - root 5

Sum = -b/a = -0/2 = 0

Product = c/a = -10/2 = -5

Verification :

Sum = alpha + beta = root5 + (-root5)

=root5 - root5 = 0

Product = alpha.beta = root5.(-root5) = -5

Hence Verified !