Question

If X plus a is a zero of polynomial 2X square plus3 a X plus one, find the value of a.

Answer 1

Answer:

x+a=0

x= -a

p(x):-2x^2+3ax+1=0

p(-a):-2(-a)^2+3a(-a)=0

:-2a^2+3a^2=0

:-5a^2=0

1

:-a^2 =----

5

/ 1

:-a= /-----

√ 5

:- a=0.2

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