Question

1. (-2-√13)(-2+√13) when simplified is :
(a) positive and irrational
(b) positive and rational
(c) negative and irrational
(d) negative and rational
​

Answer 1

Answer:

negative and rational

Step-by-step explanation:

$= > ( - 2 - \sqrt{13} ) \times ( - 2 + \sqrt{13} ) \\ = > ( - 1 - 1) \times ( - 1 + 1) \\ = > - 2 \times 0 \\ = > - 2 \\ = = > > \frac{ - 2}{1}$

Answer 2

Answer:

option (d)

negative and rational

Step by step explanation:

(-2)^2 - (√13)^2

4 - 13

-9