1. x+y=2
2. x+y=√2
3. x+y=2√2
4. x+y=1
x+y=2√2
1. 4/25
2. 3/25
3. 2/25
4. 1/25
1/25
1. 4√2
2. 8√2
3. 2√2
4. 8
8√2
1. 3/8
2. 3/4
3. 1/2
4. 1/4
1/4
1. 15/98
2. 25/98
3. 1/3
4. 1/4
25/98
1. pr-qs=0
2. p2+q2=r2+s2
3. ps-qr=0
4. p+s=q+r
ps-qr=0
1. 3!5!4!/11!
2. ∠5∠6/∠11
3. ∠3∠5∠4∠2/∠11
4. ∠5∠4∠2/∠11
∠3∠5∠4∠2/∠11
1. (1,0)
2. (1/√2,1/√2)
3. (-1/√2,1/√2)
4. (-1/√2,-1/√2)
(-1/√2,1/√2)
1. 3:2
2. 2:3
3. 2:1
4. 1:3
3:2
1. 2
2. 4
3. 8
4. 16
4