Question

Which of the following quadratic equations has root 2, -1 ?​

Answer 1

$(x - 2)(x + 1) \\ \\ = > {x}^{2} + x - 2x - 2 \\ \\ = > {x}^{2} - x - 2$

There is your answer. ✔✔

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Fóllòw Më ❤

Answer 2

Step-by-step explanation:

let

alpha=2,beta=-1

so the general form of quadratic equation is

x²-(alpha+beta)x+alpha*beta

x²-(2-1)x+(2)(-1)

x²-1x-2