Question

if y+b is a factor of 2y^2+ 2by+5y+1O. find b​

Answer 1

Answer:

By Remainder Theorem,

if y+b is factor of f(x)

Then ,

y+b=0

y=-b in f(b)=0

So,

2(-b)²+2b(-b)+5(-b)+10=0

So,

2b²-2b²-5b+10=0

=>b=2

Ans=2

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