Question

check whether root 2 and 2 are the zeros of polynomial x square - 2x
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Answer 1

Answer:

root 2 and 2 are the zeros of polynomial x square - 2 X bro

Answer 2

x^2-2x+2=0............(1)

=> x^2-x-x+2=0

=> x*(x-1)-1*(x-1)=0.............(2)

now take (x-1) common to get

(x-1)*(x-1)=0

=> x=1

Or to understand it more easily take (x-1)=p. Then (2) becomes

x*p-1*p=0

=> p*(x-1)=0

=>(x-1)*(x-1)=0

=>(x-1)^2=0

=> x-1=0

=> x=1

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