Question

(1-squareroot 5)(1+squareroot 5)

Answer 1

(a-b)(a+b) = a^2 - b^2
( sqrt(5) )^2 = 5
1 ^2 = 1

Answer 2

Im confused so the answer is 5 squareroot 1?

Answer 3

no I told you what a^2 is and what b^2 is, you just have to subtract them to get the final answer

Answer 4

So sqaureroot 4?

Answer 5

are u guessing here? why sqrt(4) ?
1-5 = ?

Answer 6

Sorry I was thinking 5-1 so the answer is squareroot -4

Answer 7

there is no sqrt
its just -4

Answer 8

Oh wow thats exactly what I had at firts I second guessed myself.......Thanks for helping me! :)

Answer 9

Can I ask one more question?

Answer 10

pls post it as a new question and not here under this one

Answer 11

Okay