state whether there following numbers are rational or not (5+√5) (5-√5)

Question

state whether there following numbers are rational or not (5+√5) (5-√5)​

Audrey · Answer

Step-by-step explanation:       it is rational because   according to (a+b)( a-b)=a^2 - b^2  so the no. will be 5^2 -(√5)^2   = 25 - 5  = 20  and 20 is rational no.

Caroline · Answer

Answer:    3.1 Bovine tuberculosis. Bovine tuberculosis is a chronic bacterial disease of cattle that sometimes affects other mammalian species. ...

Melanie

Show that:
1-sin 60°
(i) ?
tan 60° -1
tan 60° +1
COS 60°

The area of a triangle is equal to the area of a rectangle whose length and breadth are 20 cm and 15 cm respectively. Calculated t

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