How to write a quadratic equation which is having -2 and 1 as the root

1.	How to write a quadratic equation which is having -2 and 1 as the root
Answer» X2 + x -2 ={X^2 - (alpha + beta ) x +(alpha×beta ) = x^2 - (-2+1)x + (-2×1)=x^2 + x - 2 X²-2x+1

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