Question

15) If α and β are the zeroes of the polynomial 2 – 3x – x2 then α + β =​

Answer 1

Answer:

α + β =​ -3

Step-by-step explanation:

-x² -3x + 2 can be said to be of form ax² + bx + c where a = -1, b = -3, c = 2

α + β =​ -b/a  = - ( -3 ) / -1 = -3

So α + β =​ -3

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Answer 2

Answer:

The answer is -3

Step-by-step explanation: - x^2 - 3x + 2  

Given :- $\alpha$ and $\beta$ are zeroes of polynomial

So,

sum of zeroes of polynomial = -b/a  [a = -1 ; b = -3 ; c = 2]

as $\alpha$ and $\beta$ are zeroes therefore

$\alpha + \beta =$ -b/a

Substituting in the values of a and b

$\alpha + \beta =$ -(-3)/-1

$\alpha +\beta$ = -3