Question

if 'a' and 'b' are the zeroes of polynomial p(x)=x^2-5x+6, then find the value of 'a+b-3ab'.​

Answer 1

Answer:

a and b are zeroes of x^2-5x+6

a=1,b=-5,c=6

multiplication of roots=c/a

ab=6/1=6

addition=-b/a= -(-5)/1

=5

a+b-3ab=5-3(6)-5-18--13

ans--13

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Answer 2

Answer:

∴ a+b=5 , ab=6

=>a+b−3ab=5−3×6=−13

Hope my answer is correct