Question

find The Quadratic equation whose roots are = (1,2)​

Answer 1

Answer:

please refer to the attached picture

I hope it would help you

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Answer 2

Given the roots of quadratic equation are 1 and 2

Therefore,

$\mathrm{let\:\alpha = 1\:and\:\beta = 2 \: be\:two\:roots\:of\:equation}$

$\implies\fbox\mathrm{{x}^{2} - ( \alpha + \beta )x + \alpha\beta}$

${x}^{2} - (1 + 2)x + 1(2) = 0\\ {x}^{2} - 3x + 2 = 0$