If (x+a) is a factor of 2x 2 +2ax+5x+10then find the value of a.
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as (x+a) is a factor of the given polynomial,
then, 2a²-2a²-5a+10=0 //∵x=-a
=> a=2
then, 2a²-2a²-5a+10=0 //∵x=-a
=> a=2
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