IF YOU ARE SMART? 10 points ♥?

Question

10 pionts plus add.

Please solve these or type no solution>

1. x2 = 225

2. x2 = -225

3. a2 - 64 = 0

4. 3n2 - 75=0

5. n2 - 6 = 0

6. (n-5)2 = 20

ALL OF THE 2'S ARE TO THE SECOND POWER.

THANKS =]

Answer 1

1. x=15

2. X=-15

3. A=8

4.N=5

5.N=3

6.N=15

i know im right im so good at math

Answer 2

1. 15

2. No solution.  When a number is squared (to the second power) that is like going (15x15) which equals (225).  But if the solution is -225 (which means it is negative) than that means you would have to go (-15x15) which wouldn't be x-squared.  So there is no sollution.

3. 8

4. 5

5. 2.4494897427831780981972840747059 (ish)  

6. n= squareroot of 1.5

Answer 3

1. x=15

2. X=-15

3. A=8

4.N=5

5.N=3

6.N=15

Hope im right =p