Question

If 2 is a zero of polynomial p(x) = 4x² + 2x - 10a, then find the value of a​

Answer 1

Answer:

a = 2

Step-by-step explanation:

4(2)² + 2(2) - 10a = 0

16 + 4 - 10a = 0

20 - 10a = 0

-10a = -20

a = 2

Answer 2

Answer:

a=2

Step-by-step explanation:

division steps are given in the picture.

we are substituting r(x)=0 because p(x) is a factor of (x‐2) which means the remainder will be zero.

20‐10a=0

20‐10a=0 ‐10a= ‐20

(There are negative on both the sides so cut the negative).

So we get,

10a=20

10a=20 a=20/10

10a=20 a=20/10 a=2

Hope it is helpful :)