Question

the quadratic polynomial having zeroes are 1 and-2 is​

Answer 1

Answer:

If x=1 and x=−2 are zeros f the quadratic equation, then (x−1) and (x+2) are factors so their product will give us the equation.

Therefore

(x−1)(x+2)=x

2

+2x−x−2

=x

2

+x−2

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Answer 2

Answer:

x^2 + x -2

Step-by-step explanation:

1+(-2)=-1

1*-2=-2

using this formula we get the answer

{x^2-(alpha +beta)+(alpha*beta)}

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