Question

pls answer this asap​

Answer 1

Answer: (a) 15/4

Solution:

$\frac{1}{ \alpha } + \frac{1}{ \beta } - \alpha \beta \\ \\ = > \frac{ \alpha + \beta - { \alpha \beta }^{2} }{ \alpha \beta }$

We know that:

$\alpha + \beta = \frac{ - b}{a} \\ \\ \alpha \beta = \frac{c}{a}$

Put in the values:

$\frac{1 - 16}{ - 4} \\ \\ = > \frac{ - 15}{ - 4} \\ \\ = > \frac{15}{4}$

Answer 2

Answer:

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Step-by-step explanation:

Answer is 15/4