Question

Quadratic polynomial having zeroes 1 and -2 is​

Answer 1

Answer:

Quadratic polynomial has 2 zeroes,linear has 1zero.

Step-by-step explanation:

we know that ,

alpha+bita= - b/a and

alpha*bita=c/a.

we also know that general formula for quadratic equation is ,

ax square+bx+c=0.

Here,alpha is 1 and bita is -2

So,1+(-2)=- b/a and 1*(-2)=c/a

then,-1/1=- b/a and -2/1=c/a

we get value ,a=1,b=1and c=-2

Now, put these values in general formula.

Then equation becomes,

x square +x-2=0

Answer 2

Answer:

x^2+x+2

Step-by-step explanation:

dear ishika

here is you solution

given that zeros of plynomial is 1 and -2

therefore , sum of zeros = -2+1=-1

and , product of zeros =-2*1=-2

according to equation of polynomial;-

x^2-(sum of zeros)x-product of zeros

=x^2-(-1)x-(-2)

=x^2+x+2

answer is x^2+x+2

with regards

@Arsh