Question

x+a is a factor of 2x^2+2ax+5ax+10,then find a​

Answer 1

Answer:

Step-by-step explanation:

x+a=0

x=-a

P(x) = 2(-a)2+2a(-a)+5a(-a)+10=0

P(x) = 2a2-2a2-5a2+10=0

P(x) = - 5a2+10=0

P(x) = 5a2 = 10

a= root 5

Hope this helps

Answer 2

x+a=0
x=-a
P(-a)=0
2*(-a)^2+7a*-a+10=0
2a^2-7a^2=-10
-5a^2=-10
5a^2=10
a^2=10/5
a^2=2

a= root 2

This is the correct answer
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