Question

write a quadratic polynomial having zeroes 1 and -2
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Answer 1

Answer:

sum of zeroes =-b/a=1+-2=-1

therefore b=1 and and a=1

product of zeroes=c/a=1 x -2=-2

therefore C = -2

now quadratic equations=ax²+bx+c

=x²+x-2

Step-by-step explanation:

hope it is helpful to you

Answer 2

Step-by-step explanation:

alpha=1

beta=-2

alpha + beta=-b/a

=-(-2)/1=(2/1)

alpha*beta=c/a =-2

a=1,b=2,c=-2

Now,by putting in quadratic standard form,

ax²+by+c=0

1x²+2x-2=0

Ans. 1x²+2x-2=0