SOLUTION: Simplify : (√2-3)(√2+3) I got : -7-√2 Please show work through steps so I can understand this properly and know where I went wrong if I completed this inc

Algebra.Com
Question 631888: Simplify : (√2-3)(√2+3)
I got : -7-√2
Please show work through steps so I can understand this properly and know where I went wrong if I completed this incorrectly. Thank you for your time !! I realy appreciate it :)
Found 3 solutions by solver91311, ewatrrr, richwmiller:
Answer by solver91311(24713)   (Show Source): You can put this solution on YOUR website!


You start with a conjugate pair of binomial expressions which always results in the difference of two squares; in general the pattern is:



John

My calculator said it, I believe it, that settles it
The Out Campaign: Scarlet Letter of Atheism
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 

Hi,

(√2-3)(√2+3)  = -7

F	First terms  2

O	Outside terms + 3

I	Inside terms  - 3

L	Last terms  -9



 

Answer by richwmiller(17219)   (Show Source): You can put this solution on YOUR website!
 Where are your steps?

Use foil 

first outer inner last



or you should know that x^2-y^2=(x+y)*(x-y)

where x=sqrt(2) and y=3

answer should be 2-9=-7 

RELATED QUESTIONS


SIMPLIFY :   √m^2/n^3

Please show work through steps so I can understand. THank... (answered by 55305)

Divide and simplify so that there are no radicals in the denominator. show your steps... (answered by rolexramos@ymail.com)

Good evening can you please help me with these problems?
Simplify:... (answered by scott8148)

simplify these showing all work please, dont skip any steps. 

1. √-36
2.... (answered by robertb)

Hello! I have tried this a million times! My homework is full of this and i don't... (answered by Edwin McCravy)

My book doesn't explain how to solve:
(3√-5)(-4√-12)
I'd like to know what... (answered by josgarithmetic)

1.  Simplify the rational expression: Please show work 
x2 – 6x – 7
    x2 – 1... (answered by checkley71)

I need help mulitplying this: (√[6] + 2√[2])(4√[6] – 3√[2])
 (answered by jim_thompson5910)

Hello, can you please help me with this Algebra II problem? 

I don't know if I should... (answered by stanbon)