Question

If α and β are the zeros of x² + 5x + 8, then the value of (α + β) is 

(a) 5 

(b) -5 

(c) 8 

(d) -8

Answer 1

(b) –5 

Given: 

α and β be the zeroes of x² + 5x + 8. 

If α + β is the sum of the roots and is the product, then the required polynomial will be 

x² – (α + β) x + αβ. 

∴ α + β = –5