Question

Find a quadratic polynomial whose zeroes are -1 and 2​

Answer 1

Answer:

There is another method by using sum of the zeroes and product of the zeroes.

Hope it helps.

Mark Brainer.

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Teacher.

Answer 2

Given zeroes,

→ $\alpha + \beta = - 1$

→ $\alpha \beta = 2$

→ $for \: finding \: the \: quadratic \: polynomial$

→ $x ^{2} \: + ( \alpha + \beta )x \: + \: ( \alpha \beta )$

→ $x^{2} + \: ( - 1)x \: + (2)$

→ $x^{2} - x \: + 2$