Question

find the value of 'a' if x + a is a factor (zero) of the polynomial 2x²+2ax+5x+10.​

Answer 1

Answer:

The value of a is termed to be 2.

Solution:

Given that

Divide the  by

By using the division method, we get the remainder as 10-5a

Another method:

We can also find the value of a by this method,  

Let

Substitute the value of x in the given equation,

Thus, we can find the value of a = 2 in this method also.

Answer 2

Please see the image description