Question

if the given polynomial function is represented by 4x2-5x-1 then evaluate 1/alpha+1/beta ​

Answer 1

$\alpha + \beta = - b \div a = - ( - 5) \div 4 = \frac{5}{4}$

$\alpha \beta = \frac{c}{a} = \frac{ - 1}{4}$

$\frac{1}{ \alpha } + \frac{1}{ \beta } = \frac{ \alpha + \beta }{ \alpha \beta } = \frac{?}{?}$

5/4÷1/4==5