B^2c^-1
-4^2(2)^-1
-4^4^-1
-4^1/4
1 + i
-8/7J +13
Here’s a picture to see how to write it
Answer:
a) 
Step-by-step explanation:
Step(i):-
Given - 2 √3 + √75
we know that 25 × 3 = 75
- 2 √3 + √75
= -2 √3 + 
By using

= 
= 
= 
= 
492,090 would be the answer
30 ones = 30
4 hundred thousands=400,000
60 tens=600
100 hundreds=10,000
Line S.
A common internal tangent means that the lines joining the centre touches the tangent. As shown in the diagram, AB, two radii joined together touch the tangent. Hence, it is deemed as a common internal tangent.
However, line S is a common tangent, but lies outside of the centre of the circles, meaning that it is a common external tangent.