Post mathematic related questions here

Chaitanya

Cyborg Agent
May be this will help...
BTW was too lazy type :-D

*tapatalk.imageshack.com/v2/14/11/14/a5bc45d18bf2793a838881c84ec8d5c9.jpg
 
OP
rst

rst

Youngling
Solve for x

2^(2x+2)- 6^x -2 [3^(2x +2)]=0

4 2^(2x) - 2^x 3^x - 18 3^(2x) =0

Dividing both sides by3^(2x) we get

4 (2/3)^(2x) - (2/3)^x -18 =0

Let (2/3)^x =y

4 y^2 - y -18 =0

Solving
y= 9/4 or -2

(2/3)^x = (3/2)^2

x = -2
 
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OP
rst

rst

Youngling
If √(pq) =6 and p,q are positive integers. Then which of the following could not be a value of
(p-q) ?

a) 0
b) -9
c) 8
d) 5
 
OP
rst

rst

Youngling
Correct.

In that case we are not getting positive integral value of p,q
 
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OP
rst

rst

Youngling
Find the length of the diagonal of the largest possible cube inscribed in a hemisphere of radius 4√2 cm.

A) 12 cm
B) 6 cm
C) 8 cm
D) 4 cm
 

Chaitanya

Cyborg Agent
Well I have a question too..
Its not exactly mathematics but then there is no place else*tapatalk.imageshack.com/v2/15/02/12/2f52b28b05c017fb850a38576d41d2aa.jpg
 
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