Question

if x+a is a factor of 2x2+2ax+5x+10 find a

Answer 1

given x+a is a factor then x=-a should satisfy the equation

Answer 2

Answer:

value of a is 2

Step-by-step explanation:

Hey Mate ,

Here is the answer ,

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If (x+a) is a factor of 2x² + 2ax + 5x + 10 .

Then putting x = -a will give result as 0.

2(-a)² + 2a*a + 5a + 10 = 0

=> 2a² - 2a² + 5a + 10 = 0

=> 5a + 10 = 0

=> 5a = -10

=>  a  =  -2

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